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Rutgeerts, P.; Vantrappen, G.; Van Hootegem, P.; Broeckaert, L.; Janssens, J.; Coremans, G.; Geboes, K., 1987: Neodymium-YAG laser photocoagulation versus multipolar electrocoagulation for the treatment of severely bleeding ulcers: a randomized comparison

Neodymium magnets are the most powerful commercially produced magnets.. • Neodymium magnets are hard and brittle and may chip or break if dropped.. • Adams Neodymium disc magnets are magnetized through the thickness.. • Uncoated neodymium magnets may corrode in humid conditions. • Operating temperatures vary among material grades. For a comparison of neodymium material grades, please visit our chart of material properties.. • Neodymium magnets are often assembled into products using strong adhesives such as Loctite 325. Make sure that all contact surfaces are clean and dry prior to bonding. You may also be interested in our neodymium magnets with adhesive.. • Please use caution when handling magnetized neodymium magnets, their exceptional magnetic force may cause them to attract to metal (or to each other) so strongly that fingers in their path could prove painful.. ...

Neodymium-Yag laser treatment in 130 patients with upper gastrointestinal bleeding, including spurting arterial bleeding, active oozing or fresh stigmata of bleeding (fresh clot or non-bleeding vessel), permitted overall initial haemostasis in 95% of the patients. Total laser failures (rebleeds) amounted to 22%. Considering only the ulcers with vessels in 36 patients, initial control of haemorrhage was achieved in 83%, but the total failure rate amounted to 50%. A controlled randomized study in 129 patients with oozing bleeding and patients with stigmata of bleeding showed a significant (p less than 0.001) reduction of duration and of the recurrence rate of bleeding and a significant decrease (p less than 0.05) of operative indications. Mortality rates however were not lowered by laser therapy. Complications of lasertherapy did not occur. One hundred thirty-eight gastrointestinal angiomas were treated by Yag laser photocoagulation in 32 patients without complications. Although the results of Yag ...

Global Neodymium Oxide Regional Segment Analysis.. Get Sample Copy With Specific Research Information @ https://market.us/report/neodymium-oxide-market/request-sample. The major market players are assessed on various parameters such as company outline, product selection, and revenue of the business from 2020 to 2029 as follows:-. China Minmetals Rare Earth, Longyi Heavy Rare-Earth, Ganzhou Rare Earth Mineral Industry, Ganzhou Qiandong Rare Earth Group, Chenguang Rare Earth, Jiangyin Jiahua Advanced Material Resouces. The research includes primary information about the product such as Neodymium Oxide scope, segmentation, perspective. Likewise, it involves supply-demand static, Neodymium Oxide investment feasibleness, and elements that constrain the majority of the industry. Especially, it offers Neodymium Oxide product request, yearly processes, and growth phase of the industry. The forthcoming Neodymium Oxide market area along with the present ones helps key vendors, decision-inventors, and ...

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The present invention provides a self-metabolic functional material comprising a functional ferromagnetic particles dispersed in a fluid, each of the particles comprising a functional component and a chemically reactive ferromagnetic component with a characteristic of losing a ferromagnetism thereof by a chemical reaction proceeding with time, the functional ferromagnetic particles losing the ferromagnetism by the chemical reaction of the ferromagnetic component with time. The self-metabolic functional material has a desired function and gradually loses its function by being used. The degradation or loss of the function of the material can be detected by degradation or loss of ferromagnetism. By using such a material in the self-metabolic functional apparatus comprising a carrying device and a supply device, the self-metabolic functional material is self-metabolized as follows: The function of the self-metabolic functional material is degraded or lost, and at the same time the ferromagnetism is degraded

Neodymium magnets are the most generally utilized unusual-planet magnets. They can be long lasting magnets that are manufactured from neodymium alloy, boron and steel to create a tetragonal crystalline construction. Long lasting ensures that they can keep the magnetic attributes around high time periods constantly generating magnet field from the environment.. These magnets are in reality the most powerful permanent magnet kinds offered commercially plus they have even replaced other magnet types in numerous application to make contemporary products that want the strength. Right now there are actually the magnets in cord less tools as engines, fasteners as well as in hard drive hard disks. Beneath are some of the common makes use of of neodymium magnets.. Medical industry employs - The neodymium magnets are being used thoroughly for magno-therapy by healthcare professionals and physiotherapists to minimize soreness. Also, they are offered as medical products to put on as footwear insertions, ...

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Neodymium is a metal which is ferromagnetic (more specifically it shows antiferromagnetic properties), meaning that like iron it can be magnetized to become a magnet, but its Curie temperature (the temperature above which its ferromagnetism disappears) is 19 K (−254.2 °C; −425.5 °F), so in pure form its magnetism only appears at extremely low temperatures.[9] However, compounds of neodymium with transition metals such as iron can have Curie temperatures well above room temperature, and these are used to make neodymium magnets. The strength of neodymium magnets is due to several factors. The most important is that the tetragonal Nd2Fe14B crystal structure has exceptionally high uniaxial magnetocrystalline anisotropy (HA ≈ 7 T - magnetic field strength H in units of A/m versus magnetic moment in A·m2).[10][3] This means a crystal of the material preferentially magnetizes along a specific crystal axis, but is very difficult to magnetize in other directions. Like other magnets, the ...

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Sliver colloidal solutions were synthesized by Nd: YAG laser ablation 1064 nm of a high purity silver target immersed in deionised water. The effect of water layer thickness on the laser ablation efficiency of nanoparticles was investigated experimentally. UV-Vis spectrophotometer and transmission electron microscopy observations were employed to characterize the optical spectra and particle sizes of colloids, respectively. The optimum parameter of the water layer thickness (which yielded the maximum ablation efficiency) was determined. It was demonstrated that both: the average particle size and the ablation efficiency which can be tuned by choosing suitable experimental parameters of liquid layer thickness, laser fluence and post-ablation laser wavelength. Average particle size and redistribution of nanoparticles was controlled by the subsequent treatment of the ablated colloid solution with combination of 1064 and 532 nm pulses. The effects of post-ablation under laser-induced particle ...

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Neodymium magnets (or rare-earth magnets) are the worlds strongest magnets ever created by man. They have an ability to lift 1000 times more than their own weight. The neodymium magnet has many use today, they are used in hard drives, speakers, motors, toys, and much more, they are even used by hobbyist, so post your neodymium magnet related instructables here to share with other people ...

Define neodymium:YAG: Literally, neodymium:yttrium-aluminum-garnet. A cylindrical rod of yttrium-aluminum-garnet doped with neodymium that is the acti...

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Attempts to explain the source of r-process elements in our solar system (S.S.) by particular astrophysical sites still face entwined uncertainties, stemming from the extrapolation of nuclear properties far from stability, inconsistent sources of different properties (e.g., nuclear masses and β-decay properties), and the poor understanding of astrophysical conditions, which are hard to disentangle. In this paper we present results from the investigation of r-process in the high-entropy wind (HEW) of core-collapse supernovae (here chosen as one of the possible scenarios for this nucleosynthesis process), using new nuclear-data input calculated in a consistent approach, for masses and β-decay properties from the new finite-range droplet model FRDM(2012). The accuracy of the new mass model is 0.56 MeV with respect to AME2003, to which it was adjusted. We compare the new HEW r-process abundance pattern to the latest S.S. r-process residuals and to our earlier calculations with the ...

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Neodymium magnets are fabricated of a aggregate of iron, boron, a few added trace metals and, of course, neodymium. They are baby but actual strong, attending metallic, and can be shaped as rings, discs or blocks. Most frequently acclimated for computers, neodymium magnets are aswell begin in servomotors, microphones, beeline actuators, car starters, printers and speakers.. There are several affidavit why neodymium could be a acceptable best for allurement properties. The metal aggregate is acutely aggressive to any demagnetization, has a actual top activity level, and performs able-bodied in ambient temperatures. Neodymium is aswell a beneath big-ticket actual than several added metals acclimated for magnets.. There are disadvantages to neodymium magnets, however. The metal can be absolutely corrosive, and blanket is appropriate to assure a abiding achievement of energy. It is not currently aggressive to top heat, admitting scientists are alive on absolute this problem. There are added things ...

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The diluent effect on the solvent extraction of rare earth elements from neodymium magnet leachate MARINO GERGORIĆ Industrial Materials Recycling Department of Chemistry and Chemical Engineering Chalmers University of Technology ABSTRACT Rare earth elements (REEs) have become vital components in a wide range of industrial applications. The demand for the REEs has grown significantly in the last few decades. This has led to increasing costs and supply chain risk. Today, despite lower prices than in 2011, they are classified as the highest supply risk elements in the EU; thus new incentives for recycling the REEs out of electronic scrap were brought forth. End-of-life neodymium magnets are a viable source for the recovery of some REEs. Although mainly iron alloys, these materials contain neodymium, dysprosium and small admixtures of praseodymium and terbium. Leaching followed by solvent extraction of the REEs out of the leachate is an attractive and efficient way of recycling these elements out of end-of

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There are basically two formulations for attenuate apple magnets: samarium azure and neodymium alloys. These alloys were developed during the 20th aeon as an acknowledgment to industrys charge for stronger magnets to access and advance production. They aswell came in actual accessible if it came to accomplishment abounding centralized locations of computers. They are awfully above to ferrite and alnico magnets beyond the spectrum of alluring backdrop that cover alluring strength, alluring density, attrition to demagnetization and Curie temperature.. In accurate terms, alluring backbone is accepted as remanence. The remanence of magnets fabricated from samarium azure or neodymium is about college than that of acceptable magnets fabricated from adamant or added elements. Neodymium magnets in accurate accept a top minimum akin of remanence.. Much added important in a magnets account is its attrition to acceptable demagnetized. This superior is accepted as coercivity. This is an breadth in which ...

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0019] The cleaning system can include additional components or agents, such as additional functional materials. As such, in some embodiments, the caustic detergent including the alkalinity source, corrosion inhibitor and surfactant component may provide a large amount, or even all of the total weight of the caustic detergent, for example, in embodiments having few or no additional functional materials disposed therein. Likewise, in some embodiments, the rinse solution including water and the chelating acid may provide a large amount or even all of the total weight of the rinse solution, for example, in embodiments having few or no additional functional materials disposed therein. The functional materials provide desired properties and functionalities to the cleaning system. For the purpose of this application, the term functional materials includes a material that when dispersed or dissolved in a use and/or concentrate solution, such as an aqueous solution, provides a beneficial property in a ...

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This research work deals with the effect of rare earth oxides on the PP matrix with respect to the thermal and mechanical properties and to the photo-degradation under UV irradiation exposure. The rare earth oxides are used as tracers for the identification of polymer materials, in order to have an economically efficient recycling and high speed automatic sorting of plastic wastes. The addition of 0.1 wt% of such particles of a micrometric size has a minor effect on the mechanical and thermal properties of the traced materials, as well as on the photo-degradation of the polymer after UV irradiation exposure. For 1 wt% tracer content, before UV irradiation treatment, the melting and crystallization temperatures as well as the thermal stability of the PP matrix are slightly increased, whereas the elongation at break decreases from 10 to 50% for a cross-head speed of 250 mm/min. However, the addition of 1 wt% of CeO2 improves the photo-degradation resistance of the PP matrix to UV exposure due to ...

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S. Sambhudevan, Shankar, B., Dr. Saritha A., and Joseph, K., Rare earth oxide filled natural rubber composites: Synthesis, characterization and x ray shielding, International conference on advanced functional materials held at NIIST. Trivandrum , 2014.. ...

Canada Rare Earth Enters Into Agreement to Purchase a Rare Earth Separation Refinery Situated in Laos. May 9, 2016. Canada Rare Earth Corporation (Canada Rare Earth or the Company) (TSX.V: LL) is pleased to announce that it has entered into an agreement (the Agreement) to purchase 60% of the issued and outstanding shares (the Shares) of a company based in Laos (LaosCo). LaosCo owns a full capability rare earth refinery (the Refinery) that is designed to process monazite rare earth concentrate and separate the concentrate into the entire spectrum of commercially traded rare earths including light and heavy elements. LaosCos future development plans entail extending capabilities to include rare earth metal making.. The configuration of the Refinery is based on years of design, construction and operating experience in separating rare earth concentrates into individual rare earth oxides to at least 99.99% purity. The engineering team that designed and built the Refinery has built 10 ...

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This mineral comes from the nickel rich bauxite deposits at Nisi, Greece. The series is then complete with bastnasite (having near 100% fluorines) and hydroxylcarbonate (with near 100% hydroxides) as the two end members and hydroxylbastnasite as the intermediate member. The structure of the three minerals is made up of stacks of carbonate ion layers and Ce(OH, F) layers. The Ce(OH, F) layers form flat hexagonal sheets with each cerium bonded to three fluorines and visa-versa. The carbonate layers are more complex with angled carbonate triangular groups. The structure is closely studied because it is one of the few rare earth mineral structures that can accommodate variously sized cations. Hydroxylbastnasite (also spelled hydroxyl-bastnasite) has cerium, lanthanum and neodymium in its generalized formula but officially the mineral is divided into three minerals based on the predominant rare earth element found in specimens. There is Hydroxylbastnasite-(Ce) with a more accurate formula of (Ce, ...

Neodymium and praseodymium, or the more manageable NdPr for short, are already two of the most commonly used rare earth elements, accounting for 36% of global rare earth element consumption in 2015, according to analysts at RFC Ambrian, writing in … ...

Page contains details about sodium yttrium/neodymium fluoride-coated sodium yttrium/ytterbium/erbium fluoride nanoparticles . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com

A method of manufacturing a semiconductor package includes mounting and electrically connecting a semiconductor die to a substrate. The semiconductor die and the substrate are encapsulated to form an encapsulation. Via holes are laser-ablated through the encapsulation and conductive material is deposited within the via holes to form vias. A first buildup dielectric layer is formed on the encapsulation. Laser-ablated artifacts are laser-ablated in the first buildup layer. The laser-ablated artifacts in the first buildup layer are filled with a first metal layer to form a first electrically conductive pattern in the first build up layer. The operations of forming a buildup layer, forming laser-ablated artifacts in the buildup layer, and filling the laser-ablated artifacts with an electrically conductive material to form an electrically conductive pattern can be performed any one of a number of times to achieve the desired redistribution.

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TY - JOUR. T1 - Synthesis, Characterization, and Structural Comparisons of the First Neodymium(III) Sulfite-Acetate Crystal Structure. AU - Dovgan, Jakob T.. AU - Polinski, Matthew J.. AU - Villa, Eric M.. N1 - Funding Information: Funding for the project was provided by Creighton University. The authors would like to thank Creighton University and the Creighton University Chemistry Department for supporting undergraduate research. Publisher Copyright: © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. PY - 2019/1/15. Y1 - 2019/1/15. N2 - The first lanthanide sulfite compound with a secondary ligand, Nd(SO3)(C2H3O2), was hydrothermally synthesized and solved with single-crystal X-ray diffraction. In order to prevent the facile oxidation of the sulfite to sulfate, careful control of both pH and reaction temperature were required for successful synthesis of the title compound; even slight changes in conditions allow for the facile oxidation of sulfite to sulfate and yields the known ...

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Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, Nd(III), typically replaces a small fraction (1%) of the yttrium ions in the host crystal structure of the yttrium aluminium garnet (YAG), since the two ions are of similar size. It is the neodymium ion which provides the lasing activity in the crystal, in the same fashion as red chromium ion in ruby lasers. Laser operation of Nd:YAG was first demonstrated by J. E. Geusic et al. at Bell Laboratories in 1964. Nd:YAG lasers are optically pumped using a flashtube or laser diodes. These are one of the most common types of laser, and are used for many different applications. Nd:YAG lasers typically emit light with a wavelength of 1064 nm, in the infrared. However, there are also transitions near 946, 1120, 1320, and 1440 nm. Nd:YAG lasers operate in both pulsed and continuous mode. Pulsed Nd:YAG lasers are typically operated in the ...

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TY - JOUR. T1 - Management of malignant airway obstruction. T2 - Clinical and dosimetric considerations using an iridium-192 afterloading technique in conjunction with the neodymium-YAG laser. AU - Schray, Mark F.. AU - McDougall, John C.. AU - Martinez, Alvaro. AU - Edmundson, Gregory K.. AU - Cortese, Denis. PY - 1985. Y1 - 1985. N2 - Fourteen patients with malignant airway obstruction have had 21 placements of a flexible nylon catheter for afterloading Iridium-192 using the flexible fiberoptic bronchoscope. Prescribed therapy was completed in 13 patients (18 courses). All patients had prior full-dose external irradiation, and no effective surgical or chemotherapeutic options remained. While many have had a trial of neodymium-YAG (yttrium-aluminum-garnet) laser therapy alone, eight patients received laser treatment one to three weeks prior to planned brachytherapy to provide immediate relief of symptoms and/or facilitate access and safe catheter placement. Most patients (64%) had recurrent ...

摘要：派瑞林、派拉伦 ( Parylene) 是一种保护性高分子材料，是 20 世纪 60 年代中期美国联合碳化物公司开发的一种分子级敷型涂层材料，是独特的聚对二甲苯 ( poly-P-xylylene) 聚合物系列的通用名称，也是军事标准中唯一一种固态涂料。在此小编为大家介绍了一下Parylene真空气相沉积工艺及应用。 关键词：Parylene，真空气相沉积工艺，应用 前言       派瑞林、派拉伦 ( Parylene) 是一种保护性高分子材料，是 20 世纪 60 年代中期美国联合碳化物公司开发的一种分子级敷型涂层材料，是独特的聚对二甲苯 ( poly-P-xylylene) 聚合物系列的通用名称，也是军事标准中唯一一种固态涂料。Parylene使用真空气相沉积工艺形成保护膜，这种薄膜具有厚度均匀、致密无针孔、透明无应力等特点，有优异的电绝缘性和防护性。1   Parylene 的分类Parylene

It is shown that trivalent samarium, europium, terbium, dysprosium, and erbium chlorides are only 1-2% as effective as conjugated dienes at quenching the triplet state photoelimination of para-methoxyvalerophenone and the triplet state photoreduction of benzophenone. Maximum rate constants for energy transfer from the triplet excited ketones to the rare earth ions is (10 to the 8th power)/M/sec in solvents such as methanol and aqueous acetic acid. This conclusion refutes the former common assumption that such energy transfer was diffusion-controlled. It is postulated that the tight solvation of the metal ions prevents effective overlap of donor and ionic orbitals and thus decreases the exchange interaction necessary for energy transfer. (Author)(*KETONES

Babu, YS and Manohar, Hattikudur and Ramachandran, K and Krishnamurthy, SS (1978) Crystal-Structure of A Spirocyclic cyclophosphazene n3p3(nme2)4(Nhch2ch2nh) - Evidence For Inter-Molecular Hydrogen-Bonding. In: Zeitschrift für Naturforschung - B, 33 (6). 588-589 . Full text not available from this repository ...

Parylene C is used in a device because of its conformable deposition and other advantages. Techniques to study Parylene C aging were developed, and lessons learned that could be utilized for future studies are the result of this initial study. Differential Scanning Calorimetry yielded temperature ranges for Parylene C aging as well as post-deposition treatment. Post-deposition techniques are suggested to improve Parylene C performance. Sample preparation was critical to aging regimen. Short-term (%7E40 days) aging experiments with free standing and ceramic-supported Parylene C films highlighted lessons learned which stressed further investigations in order to refine sample preparation (film thickness, single sided uniform coating, machine versus laser cutting, annealing time, temperature) and testing issues (necking) for robust accelerated aging of Parylene C. ...

NEWS RELEASE. NEW YORK (December 9, 2019) - ION Energy Group, the largest natural gas options broker in the world and a portfolio company within leading independent interdealer broker OTC Global Holdings (OTCGH), today announced the addition of Het Shah as a head of research. Shah brings more than 15 years of experience in trading, research and product development to the firm and will help further build out its rapidly expanding research capabilities.. While Ion has long been known as the natural gas market leader, we have seen our clients needs evolve in recent years and are continuously trying to grow with them, said Sid Perkins, founder and managing partner at ION Energy Group. Het brings tremendous experience to the table and his addition will allow us to continue down the path of trying to expand our research capability in a rapidly changing environment.. Shah most recently developed a data analytics firm, analytix.ai, which used advanced big data modelling techniques to build more ...

Rare earth mines in particular those in southern part of China have serious ecological damages due to land and vegetation damage and water and soil erosion, during mining as very low grade of rare earth mines. There are too many small rare earth mines in southern part of China such as Jiangxi, Fujian and Guangdong. They are small in scale with simple and lagging behind mining technology. Some of them still employ the so called hill resettlement off-site pool leaching method. The recovery rate of rare earth is low with serious damage on eco environment. The mining of every 10 t of rare earth oxides will strip off land surface and generate 1000～1600 m3 tailings, damaging large amount of vegetation. The amount of tailings of a mine with annual capacity of 1000 t exceeds 200,000 ~ 300,000 t, which occupies about 20 mu (15 mu = 1 ha) land. In addition, mining without regulations and plans of individual mining sites continue to be existing after repeated banning by the government. These small ...

We have lots of magnets and magnetic accessories in stock. Pull force from 0.05Kg to 350kG. You will find the most types of strong magnets in my store. Welcome your click to other magnets in my store. In the video, there is a scissors, a magnet 3*3mm, a measuring tape. We can see the magnets ...