• Stratification occurs when water masses with different properties, primarily temperature and salinity, are layered, with lower density water on top of higher density water. (wikipedia.org)
  • We used two years of high frequency measurements and monitoring of 5-m deep and hypereutrophic Lake Ormstrup, Denmark to study the dynamics of temporary stratification and its effects on oxygen concentrations, nutrient cycling, greenhouse gas emissions and fish habitat use. (sdu.dk)
  • Temporary stratification followed by complete mixing of the water column occurred several times each summer, but its duration was highly variable between years despite only small climatic variations. (sdu.dk)
  • Anoxia at depths greater than 2-3 m developed within a few days after stratification. (sdu.dk)
  • Organisms, both microbial and multicellular, use oxygen in respiration throughout the entire depth of the ocean, so when the supply of oxygen from the surface is less than the utilization of oxygen in deep water, oxygen loss occurs. (wikipedia.org)
  • The mechanism of cyanide intoxication has been attributed to the inhibition of cytochrome oxidase, thereby decreasing the tissue utilization of oxygen. (scienceoxygen.com)
  • Ischemia is caused when there is an Inadequate blood supply (which carries oxygen) to the brain. (berkowitzlawfirm.com)
  • may occur with ischemia or with other conditions such as metabolic poisons or water intoxication. (geometry.net)
  • Hypoxia and Ischemia are both diseases caused due to the insufficiency of oxygen supply in the body, but there is a difference between hypoxia and ischemia. (mcpcourse.com)
  • Ischemia is caused by problems with the circulatory system causing damage or dysfunction of oxygen sensitive tissues . (mcpcourse.com)
  • Any organ of the body can get ischemia damage due to inadequate oxygen supply to meet the continuous demand for cellular metabolism. (mcpcourse.com)
  • Ischemia is damage or dysfunction of oxygen sensitive tissues due to reduction of blood supply. (mcpcourse.com)
  • We investigated the ability of IF1 to promote survival and proliferation in osteosarcoma and colon carcinoma cells exposed to conditions mimicking ischemia and reperfusion, as occurs in vivo, particularly in solid tumors. (bvsalud.org)
  • Global hypoxia-ischemia interrupts oxygen delivery and blood flow to the entire brain. (cdc.gov)
  • Babies with severe respiratory distress syndrome (see Respiratory distress syndrome, below) who require prolonged treatment with mechanical ventilation and oxygen are at risk for BPD. (pampers.com)
  • The sooner the oxygen supply is restored to the brain, the lower the risk for severe brain damage and death. (mybubbaandme.com)
  • The second most severe mass extinction occurred at the end of the Ordovician period, resulting in ~85% loss of marine species between two extinction pulses. (lu.se)
  • 7 Severe hypoxia in the presence of energy stimulates cells to undergo apoptosis, whereas oxygen levels above 0.5% prevent cell death. (bmj.com)
  • There are many potential causes of cerebral anoxia, including: Cardiac or respiratory arrest. (mybubbaandme.com)
  • These oceanic oxygen minimum zones (OMZ) generally occur in the middle depths of the ocean, from 100 - 1000 m deep. (wikipedia.org)
  • The concentration of the element iodine in carbonate rocks serves as an indicator for changes in oceanic oxygen level in Earth's history. (scitechdaily.com)
  • Brain hypoxia can affect anyone who experiences a shortage or lack of oxygen to the brain, but some people are at higher risk than others. (medicalnewstoday.com)
  • One of the major debates surrounding LOME is whether lack of oxygen in seawater caused that period's mass extinction. (scitechdaily.com)
  • They attribute the deep-sea anoxia to the circulation of seawater through global oceans. (scitechdaily.com)
  • According to researchers, no animals can survive here due to the growth of plankton.While normal amounts of the organisms can be beneficial, the overwhelming bloom has reached harmful levels, depriving marine life of food and oxygen and turning the seawater green for as far as the eye can see. (yahoo.com)
  • In these low oxygen areas the water circulation is slow. (wikipedia.org)
  • Short walks will increase your circulation and increase oxygen to your brain, whereas while forced walks or runs may be good for you too, they also cause your muscles to absorb much of the oxygen in your system, and that hinders increasing the oxygen being carried to your brain. (mybubbaandme.com)
  • In the Eastern Mediterranean Sea (EMS), natural climate-driven changes that impacted its physical circulation and created deep-water anoxia have led to periods of distinctive deposits referred to as sapropels. (haifa.ac.il)
  • A most dramatic and devastating example of this effect occurred in Europe during the early 1960s, when the birth of thousands of infants with absent or short limbs resulted from the maternal ingestion of the apparently harmless drug thalidomide. (solsarin.com)
  • The expert testified that the injury depicted on the imaging of the brain obtained within days of the child's birth demonstrated a mixed pattern of partial prolonged hypoxia with anoxia, which was consistent with the injury occurring during the mother's labor. (milawyersweekly.com)
  • Erb's palsy and brachial plexus injuries - Shoulder dystocia occurs when an infant's shoulder impacts the mother's pelvic bone during delivery. (gps.law)
  • Zunli Lu, professor of Earth and environmental sciences at Syracuse University, and his students took measurements of iodine concentration in carbonate rocks from that period, contributing important findings about oxygen levels at various ocean depths. (scitechdaily.com)
  • During anoxia fish accumulated in the upper 2 m and high accumulation of phosphate (up to 1.34 mg/l), ammonia (up to 2.32 mg/l) and greenhouse gases (methane up to 5 mg/l) occurred at depths greater than 2-3 m that were released at mixing. (sdu.dk)
  • 15% H2O2provided the optimum oxygen concentration for seed germination. (researchgate.net)
  • Because of the low concentration of oxygen in the child's blood (HIE), as well as the low flow state caused by the prolonged resuscitative efforts, there was thrombus formation. (milawyersweekly.com)
  • Anaerobic glycolysis is thought to have been the primary means of energy production in earlier organisms before oxygen was at high concentration in the atmosphere and thus would represent a more ancient form of energy production in cells. (mo-mag.cz)
  • Hypoxia refers to a state in which the oxygen supply is insufficient for the demand, whereas hypoxemia refers to states that have low arterial oxygen concentration. (mcpcourse.com)
  • Generalized hypoxia can occur in healthy people at a high altitude where oxygen concentration of the air is low. (mcpcourse.com)
  • It causes altitude sickness causing potentially fatal outcomes such as high altitude pulmonary edema (HAPE) and high altitude cerebral edema 由于缺氧损伤(HACE)。缺氧也可以occurred in healthy people when breathing mixtures of gasses with a low oxygen concentration, e.g. (mcpcourse.com)
  • Causes of Hypoxia can be the high altitude where oxygen concentration of the air is low, breathing mixtures of gasses with a low oxygen concentration, etc. (mcpcourse.com)
  • However, as the oxygen content of the ocean decreases, oxygen minimum zones are expanding both vertically and horizontally. (wikipedia.org)
  • Amnesia - lack of memory about events occurring during a particular period of time. (casperdetoledo.com)
  • Their data, combined with computer modeling simulations, suggested that there was no evidence of anoxia --- or lack of oxygen -- strengthening during the extinction event in the shallow ocean animal habitat where most organisms lived, meaning that climate cooling that occurred during the Late Ordovician period combined with additional factors likely was responsible for LOME. (scitechdaily.com)
  • The brain is very sensitive to lack of oxygen and cell damage will start to occur after only three minutes. (nbia.ca)
  • 1980). Details of the anaerobic energy metabolism during ambient lack of oxygen have been excellently dealt with in two recent reviews by Schöttler (1980) and Zandee et al. (mo-mag.cz)
  • Lack of oxygen leads to a process known as Ischemic cascade . (mcpcourse.com)
  • Anoxia means lack of oxygen: These acquired brain injuries occur when the brain's oxygen supply is cut off, sometimes resulting in a vegetative state. (lsbeckerlaw.com)
  • Work refers to many energy-requiring processes that can only occur as a consequence of ATP hydrolysis, such as muscle contraction, Na+,K+-ATPase activity. (mo-mag.cz)
  • Hypoxia refers to a state where the oxygen supply is insufficient for the demand. (mcpcourse.com)
  • Brain hypoxia is a medical emergency because the brain needs a constant supply of oxygen and nutrients to function properly. (medicalnewstoday.com)
  • This can be beneficial if blood vessels are compressed by increased pressure in the brain and are unable to deliver the usual amount of nutrients and oxygen to brain cells. (berkowitzlawfirm.com)
  • The supply of oxygen and nutrients is severely hampered by the malformed vessels. (bmj.com)
  • They may be the result of traumatic force, stroke, a loss of oxygen, a medication error, or a misdiagnosed tumor. (damoreinjurylaw.com)
  • Acquired brain injury covers all situations in which brain injury has occurred since birth, and includes traumatic brain injury as well as tumour, stroke, brain haemorrhage and encephalitis, to name a few. (headwayguernsey.com)
  • Without oxygen, brain cells die, and a brain injury can occur. (mybubbaandme.com)
  • We will zealously represent your interests in connection with a brain injury case that occurs because of the medical negligence of a doctor or hospital. (damoreinjurylaw.com)
  • Brain injury - Complications during delivery can cause a drop in the infant's blood oxygen. (gps.law)
  • Dr. Katheryn Laughon, who specializes in treating those who experience ntimate partner violence, notes that the combination of anoxia and micro hemorrhaging create serious brain injury. (vaivpeducation.org)
  • As the only "Big 5" extinction that occurred during icehouse conditions, this interval is an important modern analog to constrain environmental feedbacks. (lu.se)
  • The strong temporal link between these perturbations and extinctions highlights the possibility that dynamic marine oxygen fluctuations, rather than persistent, stable global anoxia, played a major role in driving the extinction. (lu.se)
  • This evidence for rapid oxygen changes leading to mass extinction has important implications for modern deoxygenation and biodiversity declines. (lu.se)
  • Another type of injury is toxic anoxia, which is where the oxygen to the brain is decreased because of toxins in the system. (rehabchicago.org)
  • The article here is just talking about too little dissolved oxygen, not euxinic like the Black Sea, not toxic sulfide like Canfield ocean. (arctic-sea-ice.net)
  • Measurements of heart and respiratory rate and oxygen saturation were measured before, during and after each sessions of respiratory physiotherapy for two groups. (bvsalud.org)
  • Cells adapt to this environmental stress, so that after repeated periods of hypoxia, selection for resistance to hypoxia induced apoptosis occurs. (bmj.com)
  • Ocean deoxygenation is the reduction of the oxygen content in different parts of the ocean due to human activities. (wikipedia.org)
  • Secondly, there is now an ongoing reduction in oxygen levels in the open ocean: naturally occurring low oxygen areas (so called oxygen minimum zones (OMZs)) are now expanding slowly. (wikipedia.org)
  • Reduction to lactate, as occurs in human muscle. (mo-mag.cz)
  • Glycolysis does not require oxygen and can occur under aerobic and anaerobic conditions. (mo-mag.cz)
  • Blocked Artery - this occur when a blood clot or other substance fills the artery and blocks the blood from getting through. (nbia.ca)
  • Morphine is a naturally-occurring opioid substance of the morphinan class. (psychonautwiki.org)
  • Cyanide rapidly decreased hepatic oxygen uptake by 70% and increased rates of glycolysis (lactate plus pyruvate production) from less than 10 to over 60 mumol/g/hr. (scienceoxygen.com)
  • On the other hand, there is evidence that anoxia in deep oceans expanded during that same time, a mystery that cannot be explained by the classic model of ocean oxygen, climate modeling expert Alexandre Pohl says. (scitechdaily.com)
  • Glycolysis occurs in the cytoplasm of the cell and is present in all living organisms. (mo-mag.cz)
  • Increased oxygen bioavailability improved the metabolism of the seeds, which extruded 5-fold more protons from the embryos. (researchgate.net)
  • [ 3 ] In dentistry, it is commonly used as a single agent (with oxygen) for partial sedation, most commonly in pediatric dental populations. (medscape.com)
  • I also assume responsibility for damage to or loss of personal property as the result of any accident that may occur. (smartwaiver.com)
  • Cyanide poisoning usually occurs as the result of smoke inhalation or with suicidal attempt. (scienceoxygen.com)
  • Systemic damage is usually a secondary result of anoxia caused by loss of lung function. (cdc.gov)
  • The rising temperatures in the oceans cause a reduced solubility of oxygen in the water, which can explain about 50% of oxygen loss in the upper level of the ocean (>1000 m). (wikipedia.org)
  • Brain cells can begin to die within 5 minutes of oxygen loss. (medicalnewstoday.com)
  • Loss of consciousness and convulsions may occur in as little as 30 seconds. (msdmanuals.com)
  • Cyanide binds to the cytochrome c oxidase (CcOX) heme a3-CuB binuclear center to inhibit both cellular oxygen utilization and ATP production (Way, 1984). (scienceoxygen.com)
  • Cyanide combines with cytochrome oxidase and prevents the transfer of electrons to oxygen. (scienceoxygen.com)
  • Glycolysis occurs in the cytoplasm. (mo-mag.cz)
  • Upper-ocean oxygenation in response to cooling was anticipated, because atmospheric oxygen preferentially dissolves in cold waters," Pohl says. (scitechdaily.com)
  • A disorder (now called chronic lung disease of infancy) that occurs when there have been serious breathing problems after birth, and the lungs and bronchial tubes have sustained some damage and scarring. (pampers.com)
  • The longer a person is deprived of oxygen, the more injury that will be caused to the brain. (rehabchicago.org)
  • A person with a diffuse axonal injury could present a variety of functional impairments, depending on where the shearing (tears) occurred in the brain. (nbia.ca)
  • A compensable birth injury occurs when an infant and/or mother is harmed during delivery due to a healthcare provider's negligent act or omission. (gps.law)
  • Sometimes a brain haemorrhage can occur after a seemingly minor head injury. (headwayguernsey.com)
  • The progression of liver injury to cirrhosis may occur over several weeks to years. (medscape.com)
  • The resulting decrease in oxygen content of the oceans poses a threat to marine life, as well as to people who depend on marine life for nutrition or livelihood. (wikipedia.org)
  • Studies have shown that oceans have already lost 1-2% of their oxygen since the middle of the 20th century, and model simulations predict a decline of up to 7% in the global ocean O2 content over the next hundred years. (wikipedia.org)
  • It may be used as a carrier gas with oxygen in combination with more potent general inhalational gases for surgical anesthesia. (medscape.com)
  • It is combined with oxygen and incrementally increasing doses of a more potent inhalational anesthetic (eg, sevoflurane) and delivered via mask inhalation. (medscape.com)
  • Many medical conditions have the potential to affect the oxygen flow to the brain. (medicalnewstoday.com)
  • Discovering the root cause of Earth's mass extinctions has long been a hot topic for scientists, as understanding the environmental conditions that led to the elimination of the majority of species in the past could potentially help prevent a similar event from occurring in the future. (scitechdaily.com)
  • These inflow events bring in water of higher salinity, and also improve oxygen conditions in the deep waters (See Box 1.1). (helcom.fi)
  • Communities can use CDC's information on the number and characteristics of children with CP, such as subtype, walking ability, and co-occurring conditions, to plan for services, guide policy, and promote full participation in community and family life. (cdc.gov)