CADMIUM BROMIDE TETRAHYDRATE prepared or source

Method one: the hydrobromic acid to the metal cadmium, plus excess bromine water. When most of metal cadmium dissolve, leaching, not soluble cadmium, the filtrate obtained heating evaporation to close to saturation, at 0 degrees Celsius cooling crystallization, crystallization water through recrystallization, isolated is the four cadmium bromide hydrate. Under the condition of vacuum drying, the available water cadmium bromide.

Number two: put metal cadmium in quartz boat, in the heat resistant glass tube filled with dry nitrogen. Under the temperature of 450 ℃, with nitrogen gas through a containing Br2 washing bottle, take Br2 on quartz boat bromination reaction with Cd. Reacting to make 3 g metal cadmium completely, need about 2 h. If you want to improve the reaction temperature to speed the bromination reaction is not desirable, because the higher reaction temperature would have evaporated metal cadmium and products. When the product appeared for * * end of reaction. The CdBr2 in Br2 atmosphere distillation twice, and then melt CdBr2, with pure CO2 removal of excess Br2, cadmium can obtain anhydrous bromide.

Number three: CdBr2 · 4 h2o (see preparation method CdBr2 · 4 h2o) crystals in decompression drying in the dryer, containing potassium hydroxide can get anhydrous cadmium bromide.

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From:Metal oxide materials

Information about AT3 ELISA Kit

This immunoassay kit allows for the in vitro quantitative assurance of animal anti- thrombin Ⅲ Ⅲ Ⅲ Ⅲ concentrations in serum, claret and added biological fluids.
This appraisal recognizes animal anti- thrombin Ⅲ. No cogent cross-reactivity or arrest was observed.
The microtiter bowl provided in this kit has been pre-coated with thrombin Ⅲ. Standards or samples are again added to the adapted microtiter bowl wells with a biotin-conjugated thrombin Ⅲ and Avidin conjugated to Horseradish Peroxidase (HRP) is added to anniversary microplate able-bodied and incubated. Again a TMB (3,3',5,5' tetramethyl-benzidine) substrate band-aid is added to anniversary well.


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Information of Lanthanum titanate

Thin films of lanthanum titanate and lithium lanthanum titanate (LLT) accept been developed by diminutive band degradation (ALD). Studies on the advance of lanthanum titanates showed that the lanthanum degradation amount is bargain if the titanium oxide and lanthanum oxide processes are combined, arch to college titanium capacity in the films. The forerunner systems acclimated for degradation of lanthanum titanates were TiCl4 + baptize and La(thd)3 (thd = 2,2,6,6-tetramethyl-3,5-heptanedione) + ozone. Lithium was alien into the actual in adjustment to drop LLT by application lithium tert-butoxide (LiOtBu) and baptize as precursors. The deposited films were analyzed by time-of-flight adaptable backfire apprehension assay (TOF-ERDA), accessory ion accumulation spectrometry (SIMS), X-ray fluorescence (XRF), X-ray reflectivity (XRR) and X-ray diffraction (XRD). TOF-ERDA gave the blur agreement of Li0.32La0.30TiOz at assimilation conditions.

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From:Organic Chemical Compound

Information about Drench coccus(NGH) nucleic acid amplification (PCR) quantitative fluorescence detection kit

Neisseria gonorrhoeae (n. gonorrhoeae, Drench coccus) for strict human parasitic bacteria, often found in acute urethritis and vaginitis of purulent secretion of white blood cells, staining similar to meningococcal form. Gonorrhea pathogens is "neisseria gonorrhoeae", that is, commonly known as neisseria gonorrhoeae. This kind of bacteria has self-regulation ability, can gain resistance variation, or at least make the curative effect of drugs, and it is for more and more kinds of antibiotics to develop that immunity. First the penicillin to its failure, again is a tetracycline, ciprofloxacin, and now the cefixime.

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From:Elisa assay kits

Some properties of N - butylpyridinium nitrate description

The body and apparent astriction of the authentic ionic aqueous n-butylpyridinium nitrate ([BuPy]NO3) were bent at temperature ambit from T = (293.15 to 338.15) K. The accessory of thermal expansion, atomic aggregate and filigree activity of [BuPy]NO3 were affected from the beginning ethics of density. The apparent anarchy and enthalpy of [BuPy]NO3 were investigated. The IL advised appearance abundant lower apparent enthalpy and filigree activity in allegory with alloyed salts. The densities and apparent tensions of bifold mixtures of [BuPy]NO3 with baptize accept been abstinent aural the accomplished agreement ambit at T = 298.15 K and atmospheric pressure. Balance molar volumes VE and apparent astriction deviations δγ were again deduced from the beginning after-effects as able-bodied as fractional molar volumes and balance fractional molar volumes. Balance molar volumes accept a abrogating aberration from ideal behavior and the apparent astriction deviations are abrogating over the accomplished compositions range. VE and δγ were activated with acceptable blueprint respectively.

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From:Catalyst chemistry

Alpha-Mediterranean anemia gene diagnosis kit (gap-PCR) related presentations

Alpha-Mediterranean anemia gene diagnosis kit (gap-PCR) is capable of α- thalassemia (α- thalassemia ) make a genetic diagnosis kit and its application. The diagnostic kit is to use the principle of double-stranded DNA specific fluorescence real-time fluorescence quantitative PCR (FQ-PCR) combined with melting curve analysis (MC) to detect α- thalassemia various haplotypes can be detected simultaneously without any missing alleles ( ie αα /, including α).
α -thalassemia
1 . Stationary patients are asymptomatic . Normal red blood cell morphology , cord blood at birth Hb Bart's content is 0.01 to 0.02 , but disappeared after 3 months .
2 . Lightweight asymptomatic patients . Mild red blood cell morphology changes, such as size, central light staining , shaped , etc. ; reduce red button cell osmotic fragility ; denatured globin -positive ; HbA2 and HbF levels normal or slightly lower . Children with umbilical cord blood Hb Bart's content was 0.034 ~ 0.140 , at 6 months after birth and disappears completely .
3 . Intermediate , also known as hemoglobin H disease . This type of clinical manifestations are quite different time anemia and anemia of varying severity . Mostly in infancy and then gradually anemia, fatigue, weakness, hepatosplenomegaly , mild jaundice ; older patients may appear similar to severe β thalassemia special face . Combined with respiratory infection or taking oxidizing drugs, antimalarial drugs can induce acute hemolytic anemia aggravated , or even hemolytic crisis .
Laboratory tests : blood and bone marrow changes similar heavy β thalassemia ; erythrocyte osmotic fragility reduction ; denatured globin -positive ; HbA2 and HbF levels to normal. Birth, blood contains about 0. 25Hb Bart's and small HbH; age , HbH gradually replaced Hb Bart's, the amount of from about 0.024 to 0.44 . Inclusion generate test positive.
4 . Heavy known as Hb Bart's hydrops syndrome. Fetus usually within 30 to 40 weeks of miscarriage, stillbirth or death within half an hour after delivery , the fetus showed severe anemia , jaundice , edema , hepatosplenomegaly , ascites, pleural effusion. Placenta huge and brittle.
Laboratory tests : blood mature red blood cell morphological changes such as heavy- β thalassemia , nucleated red blood cells and reticulocytes increased significantly . Almost all hemoglobin Hb Bart's or simultaneously with a small amount of HbH, no HbA, HbA2 and HbF.


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D-Tryptophanol to buy basic information

CAS: 52485-52-6
Product Name: D-Tryptophanol
English Synonyms: D-Tyr-ol; D-Tryptosol; D-Tryptonol; D-TRYTOPHANOL; D-TRYPTOPHANOL; HD-TRYPTOPHANOL; D-(-)-TRYPTOPHANOL; D-Tryptophanol * HCl; REF DUPL: D-Tryptophanol; D-Tryptophanol hydrochloride
Chinese Name: D-Tryptophanol
Chinese Synonyms: D-Tryptophanol
CBNumber: CB3483532
Formula: C11H14N2O
Molecular Weight: 190.24
MOL File: 52485-52-6.mol
D-Tryptophanol chemical properties
Melting Point: 86-89 ° C (lit.)
Specific rotation: -20.5 º (c = 1 in methanol)
Storage conditions: Store at 0-5 ° C



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From:Biochemical Reagent

What is Colloidal gold detection reagent?

Colloidal gold, also known as the gold sol (gold solution), refers to the diameter of the dispersed phase particles between l-150nm gold sol, belonging multiphase heterogeneous system, the color was orange-red to purple. Colloidal gold can be used as markers for immunohistochemistry, the past 10 years has developed into a colloidal gold labeled an important immune markers. Colloidal gold immunoassay in drug detection, and many other areas of biomedical research has been developed, and more and more relevant research fields attention.
Colloidal gold is a commonly used marker technology is based on colloidal gold marker used as a tracer of a novel antigen-antibody immune labeling technique has its unique advantages. In recent years, studies have been widely used in various biological. In clinical use almost all immunoblotting using its mark. While the stream type, electron microscopy, immunohistochemistry, molecular biology as well as cases biochip may be used.


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From:Elisa assay kits

Bifidobacterium Brevis understanding of the process

Bifidobacterium Brevis was in 1899 by the French scholar Tissier child nutrition from breast milk isolated from the feces of an anaerobic Gram-positive bacteria, often forked end, hence the name of bifidobacteria.
Bifidobacterium breve - understanding of the process: Since the past two decades the rise of micro-ecology and medical progress of the revolution, so that bifidobacteria increasingly recognized the importance of research. Since bifidobacteria products can be widely used in the world, the masses have recognized its importance. Especially in infants and young children to be able to provide a unique intestinal health protection, effectively reducing infant intestinal infection incidence. The main role of bifidobacteria and widely used, but also for the study of bifidobacteria laid the foundation for the development. After many experts and scholars continue to explore experiments have confirmed that bifidobacteria are the most beneficial intestinal flora, reduction in the number of bifidobacteria are disappearing is "unhealthy" state flag, Bifidobacterium is a barometer of human health. Micro-ecological studies in healthy volunteers found that the number of bacteria in the digestive tract has 100 species, their number reached 100 trillion or more. Human gut bacterial populations to increase as people age varies significantly. Baby 3 to 4 days after birth appears intestinal Bifidobacterium Bifidobacterium infants accounted for approximately 25% of total intestinal bacteria; With increasing age, bifidobacteria gradually reduce or even disappear over 65 years the elderly, the number of bifidobacteria decreased to only 7.9%, while gas production pod Clostridium, E. coli and other bacteria in a significant increase in corruption; into old age full of spoilage bacteria of intestinal bifidobacteria almost disappeared. Spoilage bacteria in the gut break down food ingredients, to produce ammonia, amines, ammonia, sulfide, skatole, indole, phenols, and nitrosamines and other toxic substances, human long-term absorption of these toxins, will accelerate the aging-induced cancer, causing arterial sclerosis, liver disorders and other diseases. Increase the number of bifidobacteria in the body in two ways: "nourishing viable in vitro" and "in vivo growth of viable cells." "In vitro nourishing viable" is the oral administration of a certain number of viable bifidobacteria system.


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From:Lactic acid bacteria