Search results

• Signal transduction
  ...ansduction processes of which the cell is capable influences how many ways it can react and respond to its environment.{{Citation needed|date=March 2010} ...ction pathways are perceived to be so central to biological processes that it is not surprising that a large number of diseases have been attributed to t
  55 KB (7,677 words) - 22:12, 21 September 2010
• Ligand-gated ion channel
  ...ypic ligand-gated ion channel is the [[nicotinic acetylcholine receptor]]. It consists of a pentamer of protein subunits, with two binding sites for [[ac [[it:Recettore ionotropico]]
  17 KB (2,344 words) - 22:12, 21 September 2010
• Quinine total synthesis
  ...the first [[stereoselective]] quinine synthesis and he shed doubt (calling it a myth) on the earlier claim in 1944 by [[Robert Burns Woodward|Bob Woodwar ...four [[stereogenic]] groups making synthesis potentially difficult because it is one of 16 [[stereoisomer]]s.
  17 KB (2,355 words) - 22:15, 21 September 2010
• Loxoprofen
  ...xonin''', [[Argentina]] as '''Oxeno''' and in [[India]] as '''Loxomac''' . It is available in these countries for oral administration, and a [[transderma Loxoprofen is a [[prodrug]]. It is quickly converted to its active ''trans''-alcohol [[metabolite]] followi
  3 KB (387 words) - 22:16, 21 September 2010
• Fenbufen
  ...ion in [[osteoarthritis]], [[ankylosing spondylitis]], and [[tendinitis]]. It can also be used to relieve backaches, sprains, and fractures. Fenbufen is [[it:Fenbufene]]
  1 KB (130 words) - 22:16, 21 September 2010
• Alfaxalone
  ...ort (1), induced by binding of alfaxalone to GABAA cell surface receptors. It has also been shown that Alfaxalone binds to a different region of this rec
  3 KB (405 words) - 21:00, 24 September 2010
• Etomidate
  ...t procedures such as reduction of dislocated joints and [[cardioversion]]. It was discovered at [[Janssen Pharmaceutica]] in [[1964]]. ...esia or for [[conscious sedation]]. It is often used in this setting since it has a rapid onset of action and a low cardiovascular risk profile, and ther
  10 KB (1,350 words) - 21:01, 24 September 2010
• Xenon
  ...after their discovery of the elements [[krypton]] and [[neon]]. They found it in the residue left over from evaporating components of [[liquid air]].<ref |title=It's Elemental - Xenon|accessdate=2007-06-16
  82 KB (11,842 words) - 21:02, 24 September 2010
• Propofol
  ...s who are receiving [[mechanical ventilation]]. In critically ill patients it has been found to be superior to [[lorazepam]] both in effectiveness as wel ...to the scattering of light from the tiny (~150&nbsp;nm) oil droplets that it contains.
  21 KB (2,875 words) - 21:03, 24 September 2010
• Gamma-Hydroxybutyric acid
  ....shtml Erowid GHB Vault : Legal Status<!-- Bot generated title -->].</ref> It is currently regulated in Australia, Canada, most of Europe and in the US. ...ted to the [[ketone body]] [[beta-hydroxybutyrate]]. As a supplement/drug, it is used most commonly in the form of a salt.<ref>e.g., '''sodium gamma-hydr
  55 KB (7,839 words) - 21:04, 24 September 2010
• Ken Alibek
  ...media and cultivation conditions for the optimization of microbial growth. It was here that he expanded his medical school laboratory skills into the com ...even though Russian security officials did not want me to go overseas. But it was a different time, I was not a Russian citizen and they could not have
  32 KB (4,653 words) - 17:22, 27 September 2010
• Bruce Edwards Ivins
  ...BI released a 92-page summary of evidence against Ivins and announced that it had concluded its investigation.<ref>{{Cite news | author = Joby Warrick | ...as ordered following his death because blood tests prior to his death made it unnecessary.<ref name=bloomberg>{{cite news |title=Scientist in Anthrax Cas
  46 KB (6,888 words) - 17:23, 27 September 2010
• Border Security and Terrorism
  ...tionship between border security and terrorism by analyzing these threats. It also discusses the government policies and procedures currently in place at ...ervice. Washington, D.C.: The Library of Congress, 2005.</ref> Therefore, it is very difficult for the government to secure every point through which pe
  19 KB (2,852 words) - 17:28, 27 September 2010
• Anthrax
  ...eria ''[[Bacillus anthracis]]''. Most forms of the disease are lethal, and it affects both humans and other animals. There are effective vaccines again ...ax does not spread directly from one infected animal or person to another; it is spread by spores. These spores can be transported by clothing or shoes.
  53 KB (7,798 words) - 17:33, 27 September 2010
• Chebyshev filter
  This may be viewed as an equation parametric in <math>\theta_n</math> and it demonstrates that the poles lie on an ellipse in [[Complex frequency space| ...type I Chebyshev filter with ε=0.5 are plotted in the graph on the left. It can be seen that there are ripples in the gain and the group delay in the
  14 KB (2,270 words) - 14:48, 10 December 2011
• Image impedance
  The difficulty here is that in order to find Z_i&nbsp;1 it is first necessary to terminate port 2 with Z_i&nbsp;2. However, ''Z''_i&nbsp;2 is found by a similar process, but it is simpler to work in terms of the reciprocal, that is image admittance ''Y
  7 KB (1,093 words) - 14:48, 10 December 2011
• Image filter end terminations
  .../sub>'' is the nominal voltage that would be delivered by the generator if it were terminated in its characteristic impedance (ie ''R₁''), not It can further be noted that the first part of the expression,
  7 KB (1,107 words) - 14:48, 10 December 2011
• Quarter-wave impedance transformer
  ...duce the required impedance, the λ/4 transformer is the other way around; it is a pre-determined length and the termination is designed to produce the r ...ge source has zero impedance, that is, it presents a [[short circuit]] and it is not useful to connect a short circuit directly across the line. Feeding
  7 KB (1,140 words) - 14:49, 10 December 2011
• Primary line constants
  ...uble that, 50 mΩ/m. Because the values of the constants are quite small, it is common for manufacturers to quote them per kilometre rather than per met ...Furthermore, while ''G'' has virtually no effect at [[audio frequency]], it can cause noticeable losses at high frequency with many of the [[dielectric
  17 KB (2,625 words) - 14:49, 10 December 2011
• Reflections of signals on conducting lines
  ...ine is not affected in any way by the open circuit at the end of the line. It cannot have any effect until the step actually reaches that point. The sign ...Since the reflected current is equal in magnitude to the incident current, it must also be so that
  23 KB (3,658 words) - 14:49, 10 December 2011
• Mm'-type filter
  ...ased complexity which is the chief reason its use never became widespread. It was only ever intended to be used as the end sections of a [[Composite imag An incidental advantage of the mm'-type is that it has two independent parameters (m and m') that the designer can adjust. Thi
  15 KB (2,296 words) - 14:50, 10 December 2011
• T pad
  ...air]] format. The T pad is intrinsically an unbalanced circuit. However, it can be converted to a balanced circuit by placing half the series resistanc ...ort and a load connected to the other. In all of the circuits given below it is assumed that the generator and load impedances are purely resistive (tho
  6 KB (931 words) - 14:50, 10 December 2011
• Impedance matching
  ...onstant signals, this impedance can also be constant. For varying signals, it usually changes with frequency. The energy involved can be electrical, mech ...e, if a transmission line is used to connect the source and load together, it must also be the same impedance: ''Z''_load = ''Z''<sub>line</sub
  31 KB (4,821 words) - 14:50, 10 December 2011
• Π pad
  ...ir]] format. The Π pad is intrinsically an unbalanced circuit. However, it can be converted to a balanced circuit by placing half the series resistanc ...ort and a load connected to the other. In all of the circuits given below it is assumed that the generator and load impedances are purely resistive (tho
  8 KB (1,224 words) - 14:51, 10 December 2011
• Spectrometer
  ...re the spectrum in [[absolute units]] rather than [[relative units]], then it is typically called a [[spectrophotometer]]. The majority of spectrophotome When a material is heated to [[incandescence]] it emits [[light]] that is characteristic of the atomic makeup of the material
  11 KB (1,486 words) - 14:51, 10 December 2011

View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)