This invention relates to the controlled release of calcium sulfate as well as to the controlled release of an additive to a calcium sulfate matrix such as medicaments or pesticides. The controlled release is achieved by a pellet comprising calcium sulfate. The pellet is prepared by the process comprising mixing powder consisting essentially of alpha-calcium sulfate hemihydrate, a solution comprising water, and, optionally, an additive and a powder consisting essentially of beta-calcium sulfate hemihydrate to form a mixture, and forming said mixture into a pellet, wherein said alpha-calcium sulfate hemihydrate and beta-calcium sulfate hemihydrate powders have specified properties such as BET surface areas, densities, mean particle sizes, and purifies. The dissolution rate of the calcium sulfate pellet is controlled by varying the weight ratio of the beta-calcium sulfate hemihydrate powder to the alpha-calcium sulfate hemihydrate powder from 0 to about 3. The invention also provides a method of

China Construction Application and Powder Shape Calcium Sulphate Dihydrate, Find details about China Calcium Sulphate, Calcium Sulfate from Construction Application and Powder Shape Calcium Sulphate Dihydrate - Zibo Qingxin Chemicals Co., Ltd.

Calcium sulphate (or calcium sulfate) is a common laboratory and industrial chemical. In the form of gamma-anhydrite (the nearly anhydrous form), it is used as a desiccant. It is also used as a coagulant in products like tofu. In the natural state, unrefined calcium sulphate is a translucent, crystalline white rock. When sold as a colour-indicating variant under the name Drierite, it appears blue or pink due to impregnation with Cobalt(II) chloride, which functions as a moisture indicator. The hemihydrate (CaSO4.~0.5H2O) is better known as plaster of Paris, while the dihydrate (CaSO4.2H2O) occurs naturally as gypsum. The anhydrous form occurs naturally as beta-anhydrite. Depending on the method of calcination of calcium sulphate dihydrate, specific hemihydrates are sometimes distinguished: alpha-hemihydrate and beta-hemihydrate. They appear to differ only in crystal shape. Alpha-hemihydrate crystals are more prismatic than beta-hemihydrate crystals and, when mixed with water, form a much ...

2009. Bioaccumulative potential Bioaccumulation is not expected. 2007 Jun;16(2):195-203. doi: 10.1097/ID.0b013e3180587ad8. Gypsum (Calcium Sulfate Dihydrate) This product can release nuisance dust in handling or during use. 2019 Oct;11(5):725-737. doi: 10.1111/os.12509. Extended setting time in vancomycin loaded groups, the only significant difference compared with pure calcium sulfate group, increase proper handling duration of premixed cements in injecting occasion, but, in those occasions with cement blocks or beads made during the operation, more time is needed before the mantle is hardened. Calcium sulfate dihydrate (alternative CAS 10101-41-4) (CAS 13397-24-5) Aquatic Fish LC50 Fathead minnow (Pimephales promelas) > 1970 mg/l, 96 hours Persistence and degradability Calcium sulfate dissolves in water forming calcium and sulfate ions. Orthop Surg. Eye, skin, nose, throat, and upper respiratory irritation can occur with dust exposure. Calcium Sulfate Suppliers USA. Biphasic Calcium Sulfate is ...

China Food Grade Calcium Sulfate Dihydrate, Find details about China Food Grade Calcium Sulfate Dihydrate, Calcium Sulfate Dihydrate from Food Grade Calcium Sulfate Dihydrate - Fooding Group Limited

Anti-static calcium sulphate access floor consists of high-density (1500Kg/m3 ) calcium sulphate core. Galvanized steel sheet is bonded to the bottom of the calcium sulphate core. HPL, PVC or ceramic is sticked to the top of the calcium sulphate...

This research is part of an ongoing project to create gypsum wallboards with enhanced fire resistance. The main goal of this research is to better understand the dehydration properties of calcium sulfate dihydrate, and the hydration of calcium sulfate hemihydrate as well as anhydrous calcium sulfate. The lab-scale kinetics of these processes were studied using thermogravimetric analysis and sorption analysis. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the products from different processes. In addition to the instrumental studies, small batches were handled in ovens and liquid slurries to better mimic the real world processing of these materials. The effects of temperature, time and humidity were investigated to determine their influence on the kinetics of dehydration/hydration of different hydration forms of calcium sulfate.

DOI: 10.11607/prd.00.0485 Prehardened medical-grade calcium sulfate hemihydrate was placed as a grafting material for sinus floor elevation in the left posterior maxilla. After 8 months of healing, three titanium plasma-sprayed screw implants (Biolock) were placed. At the same time, a bone biopsy was harvested for histologic evaluation. The specimen was processed according to standard techniques for hard tissue histology. In both the grafted area and the previously existing area of sinus floor, the histology showed complete calcium sulfate resorption and the bone was primarily of lamellar structure. In the 5-month radiograph, a new trabecular design appeared from the periphery of the grafted area, and on the 8-month radiograph, the graft material was no longer detectable and the augmented area was filled by new tissue showing a trabecular design. This case report documented that medicalgrade calcium sulfate hemihydrate, when used as a grafting material for augmentation of the sinus floor, may ...

The report Global Calcium Sulphate Industry 2016 Market Research Report provides major statistics on the state of the industry and is a valuable source of guidance and direction for companies and individuals interested in the market. It provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Calcium Sulphate market analysis is provided for the international market including development history, competitive landscape analysis, and major regions development status.. Then, the report focuses on global major leading industry players with information such as company profiles, product picture and specification, capacity, production, price, cost, revenue and contact information. Upstream raw materials, equipment and downstream consumers analysis is also carried out. Whats more, the Calcium Sulphate industry development trends and marketing channels are analyzed.. Request a Sample copy @ ...

Manufacturer of Calcium Sulphate Anhydrous, Suppliers of Calcium Sulphate Anhydrous, Dealers of Calcium Sulphate Anhydrous in Ethiopia

Manufacturer of Calcium Sulphate Anhydrous, Suppliers of Calcium Sulphate Anhydrous, Dealers of Calcium Sulphate Anhydrous in UAE

Andorra exported Plasters; (consisting of calcined gypsum or calcium sulphate), whether or not coloured, with or without small quantities of accelerators or retarders to Spain ($0.05K , 520 Kg)Andorra exports of Plasters; (consisting of calcined gypsum or calcium sulphate), whether or not coloured, with or without small quantities of accelerators or retarders was $0.05K and quantity 520Kg ...

phdthesis{f7ddb7f0-7bc5-427f-bc3b-742fdbc376e4, abstract = {Two formulations of biphasic injectable bone substitutes have been developed for the treatment of bone defects and stabilisation of fragility fractures.,br/,,br, ,br/,,br, The first formulation consists of a calcium sulphate matrix with embedded hydroxyapatite (HA) particles to provide osteoconductivity. The mechanical properties of this formulation were investigated by focussing on the factors affecting the compressive strength of the bone substitute. It was found that the relation between liquid and powder in the formulation was the key factor. By adding less liquid the strength increased. However, a lower amount of liquid makes the paste difficult to inject. Other factors that affected the strength were the amount of HA particles, their size and morphology. Increased strength was obtained for a lower content of HA particles with smaller size and smaller specific surface area. It was possible to obtain a strength comparable to ...

Calcium Sulphate small pot 100g is a premium quality fine powder. Also known as Gypsum. Calcium Sulphate is a naturally occurring calcium salt. It can be used to improve texture, as a stabiliser, a flour treating and leavening agent and to regulate acidity levels in a variety

Xiangli has researched the calcium sulphate for many years, the loading capacity of this floor from Xiangli is better than any other suppliers, and the purity of calcium sulphate in the panel more than 85% which has reached the International standard.

SHIVA INORGANICS - We are one of the leading manufacturer, exporter and supplier of Calcium Sulphate. The range we offer is highly demanded in the industry for its utmost quality, safe to use and effective results.

Chemical Name - Calcium Sulfate Dihydrate. Chemical structure - CaSO4*2H2O. Shipped in a resealable foil bag.. Calcium sulfate dihydrate has a wide variety of uses.. MSDS and Spec Sheets can be found here.. Please follow MSDS handling instructions. ...

The purpose of this study was to determine the natural history of calcium sulfate pellets implanted during acetabular fracture surgery. The study group consisted of patients sustaining an acetabular fracture with intraarticular comminution or marginal impaction or both in whom calcium sulfate pellet

Reverse Osmosis (RO) is a promising environment friendly desalination technology for clean water production. However, the performance of RO is getting affected by the mineral scaling and biofouling. During this research, various unknown interactions occurring in RO systems between minerals, microorganisms, antiscalants and antimicrobial nanomaterials were investigated. The first goal of this dissertation was to understand and investigate the calcium sulfate scaling on reverse osmosis membranes in terms of effect of different concentrations of calcium ions and effect of temperature of feedwaterfeed water. It was noted that the mineral scaling tends to increase with the increase in temperature and concentration of ions. Moreover, the results showed that the functional groups of membranes such as hydroxyl and carboxyl, tend to interact with gypsum during scaling. To investigate the interaction of seawater microorganisms with antiscalants and with calcium sulfate, various bacterial strains were ...

Used By Itself Or In Combination With Other Materials To Prevent Particle Migration In An Osseous Defect Effective As A Resorbable Barrier Over Bone Grafts Useful With Implants To Improve Osseointegration Package Contains 1 Gram Of Calcium Sulfate Hemihydrate, 10mL Of Fast Setting Solution, 5mL Of Regular Setting Solution

Thousands of our best-selling products always stocked and ready when you need them, so you dont have to wait for the items you use most. Items are shipped within 48 hours of ordering when order is received electronically or by phone prior to 1:00 pm EST. In-stock promise and 48-hour shipping time excludes hazardous chemicals and exceptional order quantities which will be made available at lead time. Availability subject to change in the event of natural disaster or forces of nature affecting sourcing, shipping, transportation, or availability of living material required for producing saleable goods. Wards Science will contact the customer directly to communicate the occurrence of such an event and provide alternate materials when available. Current stock and availability for all products available online on every product page. ...

The report generally describes calcium sulfate, examines its uses, production methods, patents. Calcium sulfate market situation is overviewed; calcium

InterSep Calcium Sulfate is a 100% synthetic calcium sulfate bone void filler engineered to fully resorb and replace bone during the healing process.

There are 80 calories in 1 piece of Tofu (Koyadofu) (with Calcium Sulfate, Dried Frozen). Get full nutrition facts and other common serving sizes of Tofu (Koyadofu) (with Calcium Sulfate, Dried Frozen) including 1 oz and 100 g.

Calcium Sulfate Panels are available in mineral material (i.e fiber reinforced calcium sulphate). These panels provide high fire resistance, have high load bearing capacity and are moisture resistant.

experimental studies have been performed in order to evaluate the behavior of different types of biomaterials involved in the process of tissue and bone regeneration. The guided bone regeneration (GBR) principles are applied in the rebuilding of periodontal tissues, damaged by the periodontal inflammatory process. Since the introduction of GBR biological principles, a wide range of materials have been tested and used as a physical barrier. At present, the autogenous material continues to be considered the best choice when reconstruction of bone defects is intended. Calcium phosphate ceramics have been widely applied as bone substitutes, coatings, cements, drug delivery systems and tissue engineering scaffolds due to their resemblance to the mineral portion of the bone tissue, relative ease in processing and good cell attachment. 40 patients (25 males and 15 females) planned to receive bone regeneration procedure were included in the study. 20 patients were treated for bone regeneration using ...

The disordered-molecular-alloy phase (DMA) of ammonia hydrates [J. S. Loveday and R. J. Nelmes, Phys. Rev. Lett. 83, 4329 (1999)] is unique in that it has substitutional disorder of ammonia and water over the molecular sites of a body centred cubic lattice. Whilst this structure has been observed in ammonia di- and mono-hydrate compositions, it has not been conclusively observed in the ammonia hemihydrate system. This work presents investigations of the structural behaviour of ammonia hemihydrate as a function of P and T. The indications of earlier studies [Ma et al. RSC Adv. 2, 4290 (2012)] that the DMA structure could be produced by compression of ammonia hemihydrate above 20 GPa at ambient temperature are confirmed. In addition, the DMA structure was found to form reversibly both from the melt, and on warming of ammonia hemihydrate phase-II, in the pressure range between 4 and 8 GPa. The route used to make the DMA structure from ammonia mono- and di-hydrates-compression at 170 K to 6 GPa ...

In 2018, Top exporters of Plasters; (consisting of calcined gypsum or calcium sulphate), whether or not coloured, with or without small quantities of accelerators or retarders to Chad were Tunisia ($49.74K , 420,000 Kg), Spain ($1.62K , 2,000 Kg), European Union ($1.61K , 2,000 Kg), Turkey ($0.18K , 3,100 Kg) Tunisia ($49.74K , 420,000 Kg), Spain ($1.62K , 2,000 Kg), European Union ($1.61K , 2,000 Kg), Turkey ($0.18K , 3,100 Kg), China ($0.00K , 40 Kg ...

The chemical CaSO4, which occurs naturally as the mineral anhydrite. Gypsum is the dihydrate mineral form, CaSO4·2H2O. Anhydrite and gypsum (commonly called gyp) are found in the subsurface and drilling even small stringers of these minerals can upset a freshwater or seawater mud. Gyp muds, lime muds and oil muds tolerate these salts best. CaSO4 is used as a mud treatment when no pH increase is needed to remove carbonate ion contamination in freshwater and seawater muds. (Lime increases pH when added for this purpose.) Gypsum and lime treatments are often used together to keep pH in the proper range. The test for determining the dissolved and undissolved calcium sulfate in a gyp mud requires two titrations with the strong EDTA reagent and Calver II® indicator when performed to API standards. It also requires a retort analysis for water content in the mud in order to calculate CaSO4 content, lbm/bbl ...

Calcium Sulphate / Formula: CaSO4.2H2O (Known as Plaster of Paris) This chemical is specifically for the school laboratory. Additionally, we cannot guarantee this chemical usable for food/health related applications.

The article contains an error. Calcium sulphate is not used as KH booster as it will not raise carbonate hardness. It will increase GH only. ...

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CA flow screeds must be abraded, vacuumed and, as with all calcium sulphate substrates, primed with ASO-Unigrund. Heated screeds must be commissioned to recognised technical regulations before installing finishes. The readiness to receive floor finishes is determined by a CM device (carbide hygrometer). (CA screeds without underfloor heating: 0.5 CM%, CA screeds with underfloor heating: 0.3 CM%).. NOTE: Ensure that there is no rising damp coming from the substrate. This type of installation does not comply with the generally recognised rules of technology and must be contractually agreed separately.. ...

LiangFeng access floor is recognized as the high quality of calcium sulphate raised floor, access raised floor, computer floor and sells well in many countries and regions, making its own contribution to global economy. As an ISO9001 & ISO14001 certified company, we ensure quality control throughout the whole process, from the designing of the systems to the shipping of client orders. Look forward to establishing a business relationship with you!

Learn more about Calcium sulphate. We enable science by offering product choice, services, process excellence and our people make it happen.

2015 CSIC. Phsophogypsum is a by-product from the processing phosphate rock. Before the use of it in cement industry such as setting regulator is necessary a study of dehydration reaction of phosphogypsum to avoid the false setting during the milling. The aim is to study the thermal behavior of two different phosphogypsum sources (Spain and Tunisia) under non-isothermal conditions in argon atmosphere by using Thermo-Gravimetriy, Differential Thermal Analysis (TG-DTA) and Differential Scanning Calorimetry (DSC). DSC experiments were carried out at temperatures ranging from ambient to 350 °C at different heating rates. The temperatures of conversion from gypsum to hemihydrate and anhydrite states and heat of dehydration were determined. Various methods were used to analyze the DSC data for reaction kinetics determination. The activation energy and frequency factor were calculated for dehydration of phosphogypsum. Activation energy values of the main dehydration reaction of phosphogypsum were ...

The goal of these studies was to develop and evaluate biocompatible nano scale calcium sulfate (nCS) and propylene glycol alginate (PGA) based composite scaffolds as a third generation biomaterial device to deliver growth factors for bone and periodontal tissue regeneration. De novo nCS or nCS and PGA composite with growth factors may enhance bone and periodontal tissue regeneration within the normal healing period of tissue and prohibit the retardation of regeneration of tissue due to slow degradation of remnants of grafted materials. The cryo-vacuum method was used to process dihydrate CS into dihydrate nCS, which was then subjected to oven drying to produce hemihydrate. Then the nCS was sterilized by glow discharge treatment (GDT) to make it available for use as a sterilized synthetic graft material for the treatment of bone defects or periodontal defects to induce bone and periodontal tissue regeneration. SEM and TEM images of nCS dihydrate powder showed that the powder consisted of ...

1,1,1-Trichloro-2-Methyl-2-Propanol Hemihydrate 6001-64-5 NMR spectrum, 1,1,1-Trichloro-2-Methyl-2-Propanol Hemihydrate H-NMR spectral analysis, 1,1,1-Trichloro-2-Methyl-2-Propanol Hemihydrate C-NMR spectral analysis ect.

Calcium sulfate has the chemical formula CaSO4 and contains one calcium ion bonded to one sulfate ion. The calcium ion has a charge of positive two, while the sulfate ion has a charge of negative...

Cement milling and gypsum dehydration. Because the cement gets hot due to the heat generated by grinding, gypsum can be partly dehydrated, forming hemihydrate, or plaster of Paris - 2CaSO 4.H 2 O. On further heating, hemihydrate dehydrates further to a form of calcium sulfate known as soluble anhydrite (~CaSO 4). This is calcium sulfate with a .... ...

Looking for online definition of calcium sulfate in the Medical Dictionary? calcium sulfate explanation free. What is calcium sulfate? Meaning of calcium sulfate medical term. What does calcium sulfate mean?

Antimony potassium tartrate hemihydrate is also referred to as potassium antimonyl tartrate, potassium antimontarterate, and emeric tartar. It is a white crystalline powder. Antimony potassium tartrate hemihydrate is slightly soluble in water.It was used in the treatment of schistosomiasis and leishmaniasis.

The development of biomaterials with high osteogenic ability for fast osteointegration with a host bone is of great interest. In this study, pearl/CaSO4 composite scaffolds were fabricated using three-dimensional (3D) printing, followed by a hydration process. The pearl/CaSO4 scaffolds showed uniform interconnected macropores (∼400 μm), high porosity (∼60%), and enhanced compressive strength. With CaSO4 scaffolds as a control, the biological properties of the pearl/CaSO4 scaffolds were evaluated in vitro and in vivo. The results showed that the pearl/CaSO4 scaffolds possessed a good apatite-forming ability and stimulated the proliferation and differentiation of rat bone mesenchymal stem cells (rBMSCs), as well as giving a better expression of related osteogenic genes. Importantly, micro-computed tomography and histology of the critical-sized rabbit femoral condyle defects implanted with the scaffolds illustrated the osteogenic capacity of the pearl/CaSO4 scaffolds. New bone was observed ...

Article Radiometric ratings for phosphogypsum in industrial areas in Romania. In order to assess the potential environmental risk of phosphogypsum and to establish a future and proper pollution management plan of gyp-stacks and waste dumps resulted d...

Grinding calcium carbonate 2 Micron YouTube Union Process provides the right wet grinding Attritor to meet your needs Advantages of using a continuous Attritor include continuous large production fastest grinding and processing excellent Paper coatings calcium carbonate clay China Calcium Carbonate Production Line Find details about China Grinding Mill Grinding Machine from Calcium

her_Products.pdf; FGD Gypsum in Wallboard and Other Products; United States Gypsum Company; 2007. Gypsum Key Commercial Properties: Safe and non-toxic mineral; Common by-product from sulfur processing (i.e.,) FGD Gypsum. FGD Gypsum in Wallboard: 63% of all FGD Gypsum produced is recovered into wallboard (and over) 27% of wallboard (is) produced from FGD Gypsum.. There are other uses and applications for FGD Gypsum, as well, which we will document in future reports; but, note that our above reference, United States Patent 7,776,150 - Process and Apparatus for Handling Synthetic Gypsum, concerns itself primarily not with making FGD Gypsum, but, in making that synthetic Gypsum easier to handle, transport and further process.. And, that is actually to focus and intent of the technology we report in this dispatch.. First, we remind you of the demonstrated expertise of Pennsylvanias Air Products and Chemicals company in both the processing of Coal and the recycling of at least one specific Coal ...

prices of gypsum in Canada. 5.2. USA gypsum market in gypsum production in USA gypsum demand in USA trade of gypsum in USA prices of gypsum in USA. 6. LATIN AMERICAN MARKET. 6.1. Argentina gypsum market in gypsum production in Algeria gypsum demand in Algeria trade of gypsum in Algeria prices of gypsum in Algeria. 6.2 .... ...

POTASSIUM ACETYLACETONATE HEMIHYDRATE에 대한 모든 정보는 Chemicalbook 에서 조회 할 수 있습니다.포함:구조식 이미지,카스 번호(CAS),분자식,녹는점,끓는 점,밀도,가격,공급자,MSDS(SDS),GHS,사용,독성,HS세관 코드.온라인 구매 지원.

Patient information for INDAPAMIDE HEMIHYDRATE 2.5 MG FILM-COATED TABLETS Including dosage instructions and possible side effects.

In this study, polysaccharides of marine origin (agar, alginate and κ-carrageenan) were used to embed nutrients to fabricate biocomposites to be employed in animal feeding. The consistency of biocomposites in water has been evaluated up to 14 days, by several methods: swelling, nutrient release and granulometric analysis. Biocomposites were produced with varying percentages of nutrients (5%-25%) and polysaccharides (1%-2%-3%). All possible biopolymer combinations were tested in order to select those with the best network strength. The best performing biocomposites were those manufactured with agar 2% and nutrients 10%, showing the lowest percentage of water absorption and nutrient release. Biocomposites made of agar 2% and nutrients 10% were the most stable in water and were therefore used to analyze their behavior in water with respect to the release of quercetin, a phenolic compound with demonstrated high antibacterial and antioxidant activities. The leaching of such molecules in water was therefore

Diazomethane is toxic by inhalation or by contact with the skin or eyes (TLV 0.2ppm). Symptoms include chest discomfort, headache, weakness and, in severe cases, collapse.[14] Symptoms may be delayed. Deaths from diazomethane poisoning have been reported. In one instance a laboratory worker consumed a hamburger near a fumehood where he was generating a large quantity of diazomethane, and died four days later from fulminating pneumonia.[15] Like any other alkylating agent it is expected to be carcinogenic, but such concerns are overshadowed by its serious acute toxicity. CH2N2 may explode in contact with sharp edges, such as ground-glass joints, even scratches in glassware.[16] Glassware should be inspected before use and preparation should take place behind a blast shield. Specialized kits to prepare diazomethane with flame-polished joints are commercially available. The compound explodes when heated beyond 100 °C, exposed to intense light, alkali metals, or calcium sulfate. Use of a blast ...

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OSHA fines company more than $76K for willfully putting employees at risk. WESTON, Ohio - While operating an industrial machine, a worker at MCM Precision Castings Inc. was exposed to noise levels that averaged 97 decibels, equal to the noise of a jackhammer, over his eight-hour shift. MCM Precision Castings Inc. employees were also exposed to dangerously high noise levels and crystalline silica dust, a cause of chronic lung disease, the U.S. Department of Labors Occupational Safety and Health Administration has found. An OSHA inspection opened on July 17, 2014, at MCM Precision Castings resulted in one willful and 17 serious health and safety violations for not conducting noise testing or providing protective equipment and not monitoring worker exposure to noise at its Weston foundry. The company faces proposed penalties of $76,200. With 18 violations, its clear that MCM Precision Castings priorities dont include the safety and health of its workforce. Failing to provide basic safety ...

gypsum production line used used gypsum board production line, used gypsum Alibaba offers 1,863 used gypsum board production line products. A wide variety of used gypsum board production line options are available to you, such as local service location, key selling points,

Calcium phosphate cements have become a subject of interest in biomedical material researchers to promote healing of bone fracture or in reconstructed bone defects because of their excellent biocompatibility and bioactivity1. So far, there is no locally product of injectable calcium phosphate cement in Malaysia. Therefore, injectable Osteopaste has been designed to conduct pre-clinical evaluations (in vivo) on critical size bone defects (CSD) of New Zealand White rabbits. The implantation of injectable Osteopaste was compared with currently available commercialized bone graft namely Jectos (calcium phosphate) and MIIG® - X3 (calcium sulphate). This injectable Osteopaste is hoped to be used as an alternative bone graft substitute to promote new bone formation and bridge the critical size bone defects.. ...

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Aunque en España la shigelosis ha experimentado un marcado descenso, ocasionalmente se detectan brotes autóctonos. El objetivo de este estudio es describir un brote de shigelosis de transmisión interpersonal ocasionado por Shigella sonnei en un colegio de Madrid. Ante la notificación de un caso de infección por Shigella sonnei en una niña de 3 años se inició una investigación en el centro escolar al que acudía. Se realizaron 520 encuestas epidemiológicas. Se definió como caso escolar si se trataba del primer caso ocurrido dentro de su núcleo familiar y como caso familiar a cualquier caso en un conviviente cuyo comienzo de síntomas fue posterior al del caso escolar. Se identificaron 88 casos (60 en alumnos y 28 entre sus familiares). La tasa de ataque (AR) en el colegio fue del 12% y del 32% en sus familias. Se observó una asociación significativa entre mayor tasa de ataque y menor edad. El brote duró dos meses. La duración del brote y la forma de la curva epidémica sugiere un patrón

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RESUMEN. Objetivos: Reportar un caso de histoplasmosis diseminada en una mujer de 26 a os, con ELISA negativo para VIH, quien muri por choque s ptico y coagulaci n intravascular diseminada, y hacer un an lisis con relaci n a lo informado en la literatura m dica. Dise o del estudio: Reporte de un caso y revisi n de la literatura. M todos: Historia cl nica completa, an lisis de los hallazgos de necropsia, estudio histopatol gico con tinciones de H&E, PAS, Grocott, inmunohistoqu mica y microscopia electr nica de transmisi n. Resultados: Cl nicamente, la paciente manifest sintomatolog a de enfermedad inflamatoria p lvica, afecci n pulmonar, dolor abdominal, s ndrome febril y s ndrome de desgaste. Evolucion con abdomen agudo y falleci por coagulaci n intravascular diseminada y choque s ptico. En la mayor a de los rganos estudiados se observaron levaduras de Histoplasma capsulatum libres en el tejido intersticial, en el citoplasma de fagocitos tisulares y circulantes y asociadas a trombos. ...

The calcium ions in the water are usually originated from limestone and chalk, which is made up of calcium carbonate CaCO3, or from other mineral deposits in the form of calcium sulphate, CaSO4. Dolomite deposits (CaMg(CO3)2) contribute to the magnesium ions in the hard water. Compared to soft water, hard water does not lather easily with soap or toothpaste. The presence of multivalent cations prevents lathering with soap solutions; instead, scum, a white precipitate is formed. The hardness in water causes water to resist soap by forming scales. For example, sodium stearate reacts with calcium: 2C17H35COONa + Ca2+ --> (C17H35COO)2Ca + 2Na+. Hard water can be defined as temporary hard water and permanent hard water. The temporary hardness in water is caused by a combination of Ca2+ ions and bicarbonate ions. Simple steps such as boiling or adding lime (calcium hydroxide, CaOH) can be used to convert to soft water.. ...

The calcium ions in the water are usually originated from limestone and chalk, which is made up of calcium carbonate CaCO3, or from other mineral deposits in the form of calcium sulphate, CaSO4. Dolomite deposits (CaMg(CO3)2) contribute to the magnesium ions in the hard water. Compared to soft water, hard water does not lather easily with soap or toothpaste. The presence of multivalent cations prevents lathering with soap solutions; instead, scum, a white precipitate is formed. The hardness in water causes water to resist soap by forming scales. For example, sodium stearate reacts with calcium: 2C17H35COONa + Ca2+ --> (C17H35COO)2Ca + 2Na+. Hard water can be defined as temporary hard water and permanent hard water. The temporary hardness in water is caused by a combination of Ca2+ ions and bicarbonate ions. Simple steps such as boiling or adding lime (calcium hydroxide, CaOH) can be used to convert to soft water.. ...

Presented by M di-T. CALCAREA SULFURICA.. Calcium sulphate, CaSO4. Preparation, Triturations.. Authority. Dr. Clarence Conant, Trans. Am. Inst. of Hom., 1873. 1, proving with the 30th; 2, proving with the 200th.. MIND. ► Emotional. ► Good spirits, but inclined to solitude (twenty-first day), [2]. ► Special good nature, late in afternoon (first day), [1]. ► Excessive gayety of spirits, in the afternoon (twenty-seventh day), [1]. ► Good spirits; best about 6 P.M. (ninth and thirteenth day), [2]. ► Hilarious good humor always after taking drug, with eructations and sour taste (second day), [1]. ► Great depression of spirits (forty-eighth day), [1]. ► Excessive, bitter melancholy, with distressing apprehensions of evil to loved ones (forty-ninth day), [1]. ► Inclined to brooding, gloomy melancholy; easily aroused to take part in conversation, etc., but never cheerful (fourteenth day), [2]. ► General low-spiritedness, especially in the afternoon and evening (twentieth day), [1]. ...

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University of Debrecen, HU. Keywords: chlorohexidine, dental, hydrogel, nanocopmosite. Hydrogels are three dimensional hydrophilic crosslinked polymer networks, which capable of swelling in water. They have soft and elastic nature, which suggests similarities to natural tissues. Hydrogels are important in dentistry. For example, PerioChip is a hydrogel, used in periodontology as a drug delivery device for the release of chlorhexidine digluconate (CHX). The Atrisorb a bioabsorbable hydrogel that can release antibiotic-doxycycline, or the Aristine what can delivery minocyclin hydrochloride to treat of acne. In this work nanocomposite biocompatible hydrogels (NCHG) were synthesised as model systems for in situ cured potentially local drug delivery devices for curing periodontal infections. The composite consists of the following components: nanoparticles (NPs), matrix gel, and CHX as antibacterial drug. The NPs were obtained by free radical initiated copolymerization of the monomers, 2-hydroxyethyl ...

Large infected bone defects (IBD) are very complicated to treat due to their high variability; they often require multiple procedures. Bone autografts are the gold standard for treatment but have several drawbacks, such as a need for a second surgery site, limited grafting material, and donor site morbidity. The objective of this research was to develop a moldable synthetic bone grafting material capable of releasing both antimicrobial and osteogenic drugs over a clinically relevant time course for the treatment of IBDs. Current treatment methods for large IBDs require two separate procedures to treat the bone defect and the infection. This research sought to combine these two procedures into one implantable composite bone graft substitute for the treatment IBDs. To begin, the degradation and mechanical properties of the calcium sulfate (CS) based composite material were evaluated for different compositions. Next, the controlled drug release profiles from the composite was achieved by using a shell and

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this is medical plaster paris bandage 1-material plaster cast / plaster of paris cotton + calcium sulfate 2-size ...

Tongling green Yang Building Materials Co., Ltd. was established in August 1998. It is a wholly owned subsidiary of Tongling Chemical Industry Group Co., Ltd. The company integrates phosphogypsum comprehensive treatment technology development, consultation, transfer and product production and sales. Now it is a backbone enterprise of Anhui provincial environmental protection industry base, and is currently the largest and strongest phosphogypsum research and development base in China. The companys existing annual production capacity of 100 thousand tons of cement retarder project is a national high-tech projects, comprehensive utilization of resources in Anhui Province, was included in the State Environmental Protection Administration of the cross century green project, the Environmental Protection Bureau of Anhui province blue sky project; the domestic yield the largest phosphogypsum processing project with annual output of 300 thousand tons of cement retarder production line put into ...

0053]The pharmaceutical composition of the present invention can be administrated as the unit dose formula, and the way of administration can be intestinal or non-intestinal, such as oral administration, etc. The media include tablet, capsule, pill, roll, powder, solution, suspension, emulsion, and particle, etc. It can be prepared as immediate release, sustained release, controlled release, and microsphere delivery system. In order to prepare the unit delivery in tablet form, each carrier for one skilled in the art can be widely used. The examples regarding to the carriers are the dilutents and the absorbents, i.e. starch, dextrin, calcium sulphate, lactose, mannitol, sucrose, sodium chloride, glucose, urea, calcium carbonate, kaolin, microcrystalline cellulose, and aluminum silicate, etc. The further examples regarding to the carriers are the wetting agents and the bonding agents, i.e. water, glycerol, polyethylene glycol, ethanol, propanol, starch slurry, dextrin, syrup, honey, glucose ...

Rukuni, TT, Maree, JP and Carlsson, FHH Investigation of carbonate dissolution for the separation of magnesium hydroxide and calcium sulphate in a magnesium hydroxide-calcium sulphate mixed sludge. Water SA, 2015, vol.41, no.2, p.253-262. ISSN 1816- ...

Rukuni, TT, Maree, JP and Carlsson, FHH Investigation of carbonate dissolution for the separation of magnesium hydroxide and calcium sulphate in a magnesium hydroxide-calcium sulphate mixed sludge. Water SA, 2015, vol.41, no.2, p.253-262. ISSN 1816- ...

Calcium sulphate. Ca SO4.. 1847. Extracts from provings of C. Hg., Withy, and that of a young lady.. 1873. Extracts from provings with the 30th and 200th by C. M. Conant (Trans. Am. Inst. of Hom.).. Cured symptoms by C. Hg., Koeck and Knerr.. Symptoms from Schuessler and Old school authorities are marked with : (OBS :).. t. stands for toxicological symptoms.. MIND. [1] [Calc. s.]. Loss of consciousness ; t. Loses memory and power of thought suddenly, after lunch. Sometimes a desire to walk, to attend to something ; as soon as she sets out to do it the desire is gone. Awoke screaming. Great depression at times. Liveliness and good spirits change to grief and melancholy, afternoon and evening. SENSORIUM. [2] [Calc. s.]. While walking, dizzy in head and weakness and oppression from head and across stomach. Vertigo with deathly nausea. INNER HEAD. [3] [Calc. s.]. Pain in left forehead and head. Severe frontal headache, , after dinner and in evening. Ache across forehead and in vertex. Pain around ...

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Long-term use of ammoniacal fertilizers will result in lowering the pH gradually and keeping it in the desired range. Ammonium sulfate or iron sulfate can be better options for the home gardener because the likelihood of over-application is limited.. 2. When high soil pH is due to salt accumulation on the soil surface in the drier regions, usually calcium sulfate (gypsum) is recommended. Calcium ions (Ca+2) in gypsum will replace sodium ions (Na+) from the soil exchange sites and lower the pH. The Na+ in the soil will then have to be flushed out with fresh water from rainfall or good-quality (low-soluble-salt-content) irrigation water as an effective long-term solution. 3. In certain cases, elemental sulfur (S) may be applied to the soil. It has to be recognized, however, that S is an essential plant nutrient. Plants take up only the oxidized form-sulfate (SO4-2)-and not its elemental form (S). So, the source(s) for supplying this essential element as fertilizer should always include sulfate. ...

Many gypsiferous soils occur in arid lands, where the water retention capacity of the soil is vital to plant life and crop production. This study investigated the effect of gypsum content on the gravimetric soil water retention curve (WRC). We analyzed calcium carbonate equivalent (CCE), equivalent gypsum content (EG), soil organic carbon content (SOC), and electrical conductivity of 43 samples collected from various horizons in soils in the Ebro Valley, NE Spain. The WRC of the fine earth was determined using the pressure-plate method (pressure heads = 0, −33, −100, −200, −500, and −1500 kPa), and the gravimetric water retention curves were fitted to the unimodal van Genuchten function. Soil gypsum content had a significant effect on water retention. Soils that had high gypsum content made WRC with higher water retention at near saturation conditions, and steeper WRC slopes. The EG threshold at which gypsum content had an effect on WRC was about 40%, and EG was positively and ...

phosphorus gypsum plant plant price. Simply complete the form below, click submit, you will get the price list and a Birnith representative will contact you within Gypsum briquetting machine is mainly used to suppress desulfurizationcan press desulfurized gypsum powder, ... gypsum panel plant supplier Phosphorus gyp ...Start studying huan jing ke xue. Learn vocabulary, terms, and more with flashcards, games, and other study tools.China, South Africa, Germany, USA, Nigeria, Kenya, Indonesia, Pakistan, Saudi Arabia, UAE Phosphorus gypsum powder plant - Grinding & Crus. Chat Online; ...

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An injectable bone mineral substitute material composition comprises an inorganic bone cement powder and a biologically compatible oil. The oil is an intermixture with the cement powder at a concentration of less than 10 wt % of the total weight of the composition in order to improve the rheology of the same. In a method of intermixing a powder of an implant material and a biologically compatible oil to a composition the oil is mixed with the powder of implant material at an elevated temperature.

Wei, X. and Akinc, M. (2005) Resorption Rate Tunable Bioceramic: Si&Zn-Modified Tricacium Phosphate, in Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6 (ed M. Mizuno), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291269.ch16 ...

The automotive sector has taken a keen interest in lightweighting as new required performance standards for fuel economy come into place. This strategy includes parts consolidation, design optimization, and material substitution, with sustainable polymers playing a major role in reducing a vehicles weight. Sustainable polymers are largely biodegradable, biocompatible, and sourced from renewable plant and agricultural stocks. A facile way to enhance their properties, so they can indeed replace the ones made from fossil fuels, is by reinforcing them with fibers to make composites. Natural fibers are gaining more acceptance in the industry due to their renewable nature, low cost, low density, low energy consumption, high specific strength and stiffness, CO2 sequestration potential, biodegradability, and less wear imposed on machinery. Biocomposites then become a very feasible way to help address the fuel consumption challenge ahead of us. This book, entitled Biocomposites in Automotive ...

TY - JOUR. T1 - Stimolazione VDD monocatetere con sensing in seno coronarico. T2 - Un caso di impianto attraverso vena cava superiore sinistra persistente. AU - Bielli, M.. AU - Parravicini, U.. AU - Zanetta, M.. AU - Mezzani, A.. AU - Zenone, F.. AU - Franchetti, N.. AU - Di Camillo, T.. AU - Iraghi, G.. AU - Perucca, A.. PY - 2000. Y1 - 2000. N2 - We report the case of a VDD single-lead pacemaker implantation through a persistent left superior vena cava in a 48-year-old male patient with recurrent episodes of syncope due to paroxysmal atrioventricular block. VDD lead insertion through the anomalous venous structure led to positioning of the floating sensing dipole into the coronary sinus, in a very large and stable sensed atrial signal due to the close anatomic relationship between the coronary sinus and the left atrium. Shortness of the sensed atrioventricular interval allowed VDD stimulation to occur only in the case of paroxysmal atrioventricular block.. AB - We report the case of a VDD ...

blockquote class=wp-embedded-content,,a href=https://notife.com/803723-chile-confirmo-un-segundo-caso-de-la-variante-delta/,Chile confirmó un segundo caso de la variante Delta,/a,,/blockquote, ,script type=text/javascript, ,!--//--,,![CDATA[//,,!-- /*! This file is auto-generated */ !function(c,d){use strict;var e=!1,n=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp,,{},!c.wp.receiveEmbedMessage)if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret,,t.message,,t.value)if(!/[^a-zA-Z0-9]/.test(t.secret)){for(var r,a,i,s=d.querySelectorAll(iframe[data-secret=+t.secret+]),n=d.querySelectorAll(blockquote[data-secret=+t.secret+]),o=0;o,n.length;o++)n[o].style.display=none;for(o=0;o,s.length;o++)if(r=s[o],e.source===r.contentWindow){if(r.removeAttribute(style),height===t.message){if(1e3,(i=parseInt(t.value,10)))i=1e3;else ...

has moved to a new address:. ENDOSCOPIA DIGESTIVA: Lipoma pediculado en colon ascendente (caso de A. Pérez) Sorry for the inconvenience… Redirection provided by Blogger to WordPress Migration Service ...

Not content with laser-burning and scrubbing Mars rock, Curiosity has now drilled into a rocky target, exposing the pristine geological bounty inside. This is the first time a robot has carried out a drilling operation on another planet. Whats more, the action of drilling its way into the John Klein outcrop has dislodged material near the drill bit (pictured above), exposing a bright vein presumably rich in calcium sulfate ...

AMMONIUM BICARBONATE, CALCIUM LATATE,CALCIUM PHOSPHATE, CALCIUM SULFATE, CHLORTETRACYCLINE, CITRIC ACID, COBALT SULFATE, DL-MALIC ACID, DL-TARTARIC ACID, ETHYL P-HYDROXYBENZOATE, FERROUS SULFATE, FUMARIC ACID, GLUTAMIC ACID, GLYCINE, LACTIC ACID, L-ASPARTIC ACID, L-CYSTEINE, L-MALIC ACID, L-METHION