List of topics characterized as pseudoscience
This is a list of topics that have, either currently or in the past, been characterized as pseudoscience by academics or researchers. Detailed discussion of these topics may be found on their main pages. These characterizations were made in the context of educating the public about questionable or potentially fraudulent or dangerous claims and practices—efforts to define the …
Hòa tan hết 17,94 gam một kim loại kiềm vào một lượng nước dư
Hòa tan hết 17,94 gam một kim loại kiềm vào một lượng nước dư thu được dung dịch X. Cho dung dịch X tác dụng với 36,92 gam P2O5 thì thu được dung dịch Y chỉ chứa hai …
HIV
HIV is similar in structure to other retroviruses. It is roughly spherical with a diameter of about 120 nm, around 100,000 times smaller in volume than a red blood cell. It is composed of two copies of positive-sense single-stranded RNA that codes for the virus's nine genes enclosed by a conical capsid composed of 2,000 copies of the viral protein p24. ...
Average human height by country
The study uses a Bayesian hierarchical model to estimate the trends from 1985 to 2019 in mean height, 1,344 academics having collated the results of 2,181 studies covering 65 million people, and mean BMI in one-year age groups for ages 5–19 years across 193 regions, all based on selected material rather than all available.; The figures demonstrate a discrepancy with many …
PlayStation userbase "significantly larger" than Xbox even if every …
Microsoft has responded to a list of concerns regarding its ongoing $68bn attempt to buy Activision Blizzard, as raised by the UK's Competition and Markets Authority (CMA), and come up with an ...
Samsung Galaxy A51
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Cataract
A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision. Cataracts often develop slowly and can affect one or both eyes. Symptoms may include faded colors, blurry or double vision, halos around light, trouble with bright lights, and trouble seeing at night. This may result in trouble driving, reading, or recognizing faces. ...
Osteonecrosis of the jaw
Osteonecrosis of the jaw (ONJ) is a severe bone disease (osteonecrosis) that affects the jaws (the maxilla and the mandible).Various forms of ONJ have been described since 1861, and a number of causes have been suggested in the literature. Osteonecrosis of the jaw associated with bisphosphonate therapy, which is required by some cancer treatment regimens, has been …
Sinking of MV Sewol
The ferry MV Sewol sank on the morning of Wednesday, April 16, 2014, en route from Incheon towards Jeju in South Korea. The 6,825-ton vessel sent a distress signal from about 2.7 kilometres (1.7 mi; 1.5 nmi) north of Byeongpungdo at 08:58 KST (23:58 UTC, April 15, 2014). Out of 476 passengers and crew, 306 died in the disaster, including around 250 students from …
μ-opioid receptor
The μ-opioid receptors (MOR) are a class of opioid receptors with a high affinity for enkephalins and beta-endorphin, but a low affinity for dynorphins.They are also referred to as μ(mu)-opioid peptide (MOP) receptors.The prototypical μ-opioid receptor agonist is morphine, the primary psychoactive alkaloid in opium and for which the receptor was named, with mu being the …
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Antibody
An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses.The antibody recognizes a unique molecule of the pathogen, called an antigen. Each tip of the "Y" of an antibody contains a paratope (analogous to a lock) that is specific for one …
Topologically associating domain
A topologically associating domain (TAD) is a self-interacting genomic region, meaning that DNA sequences within a TAD physically interact with each other more frequently than with sequences outside the TAD. The median size of a TAD in mouse cells is 880 kb, and they have similar sizes in non-mammalian species. Boundaries at both side of these domains are …
List of accidents and incidents involving military aircraft (2000–2009)
Three crew are killed when a Republic of Korea Army Boeing Vertol CH-47D Chinook, of the 301st Aviation ... The dead were identified as pilot Chun Hong-yop, co-pilot Nam In-ho and Sgt. 1st Class Kim Woo-soo. Army scuba divers were working to ... A United States Navy Sikorsky MH-53E Sea Dragon of HM-14 BuNo 163051 crashed on the runway at ...
Testosterone
Testosterone is the primary hormone and anabolic steroid in males. In humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair. In addition, testosterone in both sexes is involved in health and …
Cho một mẫu hợp kim K-Ca tác dụng với nước (dư), thu được …
Cho một mẫu hợp kim K-Ca tác dụng với nước (dư), thu được dung dịch X và 3,36 lít H2 (ở đktc) [đã giải] Neo Pentan gửi 31.05.2020. Cho một mẫu hợp kim K-Ca tác dụng với …
Beta-lactamase
Structure. The structure of a Streptomyces serine β-lactamase (SBLs) is given by 1BSG.The alpha-beta fold (InterPro: IPR012338) resembles that of a DD-transpeptidase, from which the enzyme is thought to have evolved from. β-lactam antibiotics bind to DD-transpeptidases to inhibit bacterial cell wall biosynthesis.Serine β-lactamases are grouped by sequence similarity into …
Người ta bỏ một miếng hợp kim chì và kẽm có khối lượng 50 g ở …
Xác định khối lượng của kẽm và chì trong hợp kim trên. Biết nhiệt độ khi có sự cân bằng nhiệt trong nhiệt lượng kế là 18 oC. Cho nhiệt dung riêng của nước là cn = 4180 J/kg.K; của kẽm là …
Atomic layer deposition
Atomic layer deposition (ALD) is a thin-film deposition technique based on the sequential use of a gas-phase chemical process; it is a subclass of chemical vapour deposition.The majority of ALD reactions use two chemicals called precursors (also called "reactants"). These precursors react with the surface of a material one at a time in a sequential, self-limiting, manner.
mh một kim ch k
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Hangul
The Korean alphabet, known as Hangul (English: / ˈ h ɑː n ɡ uː l / HAHN-gool) in South Korea and Chosŏn'gŭl in North Korea, is the modern official writing system for the Korean language. The letters for the five basic consonants reflect the shape of the speech organs used to pronounce them, and they are systematically modified to indicate phonetic features; similarly, the vowel …
Sodium channel
Sodium channels are integral membrane proteins that form ion channels, conducting sodium ions (Na +) through a cell's membrane. They belong to the superfamily of cation channels and can be classified according to the trigger that opens the channel for such ions, i.e. either a voltage-change ("voltage-gated", "voltage-sensitive", or "voltage-dependent" sodium channel; also …
Bacteria
Bacteria (/ b æ k ˈ t ɪər i ə / (); singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell.They constitute a large domain of prokaryotic microorganisms.Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.Bacteria inhabit soil, water, acidic hot …
Bladder cancer
Bladder cancer is any of several types of cancer arising from the tissues of the urinary bladder. Symptoms include blood in the urine, pain with urination, and low back pain. It is caused when epithelial cells that line the bladder become malignant. Risk factors for bladder cancer include smoking, family history, prior radiation therapy, frequent bladder infections, and exposure to …
Vitamin B12 deficiency
Vitamin B 12 deficiency, also known as cobalamin deficiency, is the medical condition in which the blood and tissue have a lower than normal level of vitamin B 12. Symptoms can vary from none to severe. Mild deficiency may have few or absent symptoms. In moderate deficiency, feeling tired, anemia, soreness of the tongue, mouth ulcers, breathlessness, feeling faint, rapid …
Breastfeeding and the Use of Human Milk
Breastfeeding and human milk are the normative standards for infant feeding and nutrition. Given the documented short- and long-term medical and neurodevelopmental advantages of breastfeeding, infant nutrition should be considered a public health issue and not only a lifestyle choice. The American Academy of Pediatrics reaffirms its recommendation of …
HUDOC
The HUDOC database provides access to the case-law of the Court (Grand Chamber, Chamber and Committee judgments and decisions, communicated cases, advisory opinions and legal summaries from the Case-Law Information Note), the European Commission of Human Rights (decisions and reports) and the Committee of Ministers (resolutions)
Cho một mẫu hợp kim Na- K-Ca tác dụng với nước (dư), thu được …
Cho một mẫu hợp kim Na- K-Ca tác dụng với nước (dư), thu được dung dịch X và 3,36 lít H2 (ở đktc). Thể tích dung dịch axit HCl 1,5 M cần dùng để trung hoà một phần hai dung dịch X là A. …
List of military electronics of the United States
AN/AAQ-10: FLIR; used in HH-53H, MH-53J, MC-130E AN/AAQ-11: PNVS (Pilot Night Vision Sensor) FLIR; manufactured by Lockheed Martin ; used with AN/ASQ-170; used in AH-64 AN/AAQ-12: TADS (Target Acquisition Designation Sight), a turreted sensor pack designed for target acquisition, range-finding and target illumination for the use of laser ...
Sodium dodecyl sulfate
Sodium dodecyl sulfate (SDS) or sodium lauryl sulfate (SLS), sometimes written sodium laurilsulfate, is an organic compound with the formula C H 3 (CH 2) 11 O SO 3 Na.It is an anionic surfactant used in many cleaning and hygiene products. This compound is the sodium salt of the 12-carbon an organosulfate.Its hydrocarbon tail combined with a polar "headgroup" give the …
Carcinogenesis
Carcinogenesis, also called oncogenesis or tumorigenesis, is the formation of a cancer, whereby normal cells are transformed into cancer cells.The process is characterized by changes at the cellular, genetic, and epigenetic levels and abnormal cell division.Cell division is a physiological process that occurs in almost all tissues and under a variety of circumstances.
vn/mh một kim ch k.md at main · sbmboy/vn
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Ataxia–telangiectasia
Ataxia–telangiectasia (AT or A–T), also referred to as ataxia–telangiectasia syndrome or Louis–Bar syndrome, is a rare, neurodegenerative, autosomal recessive disease causing severe disability. Ataxia refers to poor coordination and telangiectasia to small dilated blood vessels, both of which are hallmarks of the disease. A–T affects many parts of the body:
Sikorsky CH-53K King Stallion
The Sikorsky CH-53K King Stallion (Sikorsky S-95) is a heavy-lift cargo helicopter designed and produced by Sikorsky Aircraft. The King Stallion is an evolution of the long running CH-53 series of helicopters which have been in continuous service since 1966, and features three uprated 7,500 shp (5,590 kW) engines, new composite rotor blades, and a wider aircraft cabin than its predece…
Convert km/h to m/h
Kilometers per hour to Meters per hour Conversion Example Task: Convert 75 kilometers per hour to meters per hour (show work) Formula: km/h x 1,000 = m/h Calculations: 75 km/h x 1,000 = …
Nonmetal
About half of nonmetallic elements are gases; most of the rest are shiny solids. Bromine, the only liquid, is so volatile that it is usually topped by a layer of its fumes; sulfur is the only colored solid nonmetal. The fluid nonmetals have very low densities, melting points and boiling points, and are poor conductors of heat and electricity. The solid elements have low densities, are brittle ...
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