Spontaneous

The studied object is the Kerr nonlinear optical systems and optical resonator tworing systems linear coupling with the presence of linear gain and nonlinear loss.

26p prisonbreak123 21-05-2021 12 4   Download

Research purpose: to build an analytical model describing the dependence of the optical properties (absorption, dispersion, group velocity and group delay) of the three configuration energy level system Λ, Ξ and V according to the following parameters: control parameters (intensity, frequency, polarization and relative phase) of the laser fields.

25p prisonbreak123 21-05-2021 18 3   Download

The thesis assesses the impact of some factors at the village site on the impromptu buying behavior of young women; the impact of payment methods on the relationship between point-of-sale factors and impromptu behavior.

0p trinhthamhodang1217 14-01-2021 32 3   Download

The thesis assesses the impact of some factors at the point of sale on the impromptu behavior of young women in Hanoi and Ho Chi Minh; young people's spontaneous shopping behavior differences; offers a number of measures to help ready-to-wear retailers to promote impromptu buying by consumers.

15p mmlemmlem_124 22-12-2020 25 1   Download

This topic is researched for two goals: Description of clinical characteristics, subclinical disease Peritonitis infections spontaneously. Results of identification of bacteria and antibiotics on the isolates of bacteria. Evaluation of the results of treatment of peritonitis infection spontaneously in patients with cirrhosis.

27p slimzslimz 21-12-2019 37 8   Download

Bài viết Báo cáo loạt ca bệnh tràn khí trung thất tự phát được chẩn đoán và điều trị tại Bệnh viện Phổi Trung ương trình bày Tràn khí trung thất tự phát (Spontaneous pneumomediastinum) là sự xuất hiện của khí tự do trong trung thất mà không có nguyên nhân rõ ràng. Tại Bệnh viện Phổi Trung ương, từ tháng 5 năm 2012 đến tháng 10 năm 2015, có 7 trường hợp tràn khí trung thất tự phát, ),... Mời các bạn cùng tham khảo.

8p baoyencute 11-05-2018 95 4   Download

Bài giảng phần 1 - Các phương pháp đo trường tự nhiên. Phần này trình bày những nội dung chính như sau: Phương pháp thế tự nhiên (SP) – Spontaneous Potential, phương pháp gammma tự nhiên (GR) – Natural Gamma Ray, phương pháp phổ gammma (NGS) – Natural Gamma Ray Spectometry. Mời các bạn cùng tham khảo để nắm bắt các nội dung chi tiết.

10p tangtuy05 25-03-2016 126 21   Download

The insect ecdysteroid receptor consists of a heterodimer between EcR and the RXR-orthologue, USP. We addressed the question of whether this heterodimer, like all other RXR heterodimers, may be formed in the absence of ligand and whether ligand promotes dimerization. We found that C-terminal protein fragments that comprised the ligand binding, but not the DNA binding domain of EcR and USP and which were equipped with the activation or DNA binding region of GAL4, respectively, exhibit a weak ability to interact spontaneously with each other.

9p system191 01-06-2013 29 3   Download

At the time of implantation in the maternal uterus, the trophectoderm of the pig blastocyst is the source of a massive secretion of interferon-gamma (IFN-c), together with lesser amounts of IFN-d, a unique species of type I IFN. This trophoblastic IFN-c (TrIFN-c) is an unprecedented example of IFN-c being produced spontaneously by an epithelium. We therefore studied some of its structural and biochemical properties, by comparison with pig IFN-c from other sources, either natural LeIFN-c (from adult leucocytes), or recombinant. ...

10p system191 01-06-2013 50 6   Download

A series of thylakoid membrane proteins, including PsbX, PsbY and PsbW, are synthesized with cleavable signal peptides yet inserted using none of the known Sec/SRP/Tat/ Oxa1-type insertion machineries. Here, we show that, although superficially similar to Sec-type signal peptides, these thylakoidal signal peptides contain very different determinants.

11p system191 01-06-2013 46 4   Download

Reduced denatured lysozyme tends to aggregate at neutral pH and competition between productive folding and aggregation substantially reduces the efficiency of refolding. Trigger factor, a folding catalyst and chaperone can, depending on the concentration of trigger factor and the solution conditions, cause either a substantial increase (chaperoneactivity) or a substantial decrease (antichaperone activity) in the recoveryof native lysozymeas comparedwith spontaneous refolding.

8p research12 23-04-2013 39 3   Download

PhotobacteriumphosphoreumIFO13896 emits light strongly when cultured in medium containing 3% NaCl, but only weakly in medium containing 1% NaCl.It is known that dim or dark mutants appear frequently and spontaneously from this parent strain.To confirm that riboflavin biosyn-thesis is stimulatedwhen theluxoperon is active, the amount of light emitted and flavins synthesized under strongly or weakly light emitting conditions was determined.

10p tumor12 22-04-2013 27 5   Download

Amyloid protein (Ab1–40) aggregation and conformation was examined using native and sodium dodecyl sulfate/ polyacrylamide gel electrophoresis,and the results com-pared with those obtained by atomic force microscopy, and with Congo red binding,sedimentation and turbidity assays. The amount of Ab aggregation measured was different,depending upon the method used. Incubation for 15 min at pH 5.0 or in the presence of Fe 2+ ,Cu 2+ or Zn 2+ did not alter the level of Aboligomers observed on SDS and native gels....

12p tumor12 20-04-2013 41 4   Download

In membranes of the small prokaryoteAcholeplasma laid-lawii bilayer- and nonbilayer-prone glycolipids are major species, similar to chloroplast membranes. Enzymes of the glucolipid pathway keep certain important packing proper-ties of the bilayerin vivo, visualized especiallyas amonolayer curvature stress (
spontaneous curvature).

11p fptmusic 16-04-2013 21 2   Download

The serpin plasminogen activator inhibitor-1 (PAI-1) is a fast and specific inhibitor of the plasminogen activating serine proteases tissue-type and urokinase-type plasminogen activator and, as such, an important regulator in turnover of extracellularmatrixand infibrinolysis. PAI-1 spontaneously loses its antiproteolyticactivityby inserting its reactive centre loop (RCL) as strand 4 in b-sheet A, thereby converting to the so-called latent state.

9p fptmusic 16-04-2013 26 3   Download

Spontaneous oxidation of 3-hydroxykynureine (3-HK), a metabolic inter-mediate of the tryptophan degradation pathway, elicits a remarkable oxida-tive stress response in animal tissues. In the yellow fever mosquito Aedes aegyptithe excess of this toxic metabolic intermediate is efficiently removed by a specific 3-HK transaminase, which converts 3-HK into the more sta-ble compound xanthurenic acid.

10p fptmusic 12-04-2013 39 3   Download

The interaction with phospholipid bilayers of two synthetic peptides with sequences corresponding to a segment next to the native N-terminus and an internal region of the E2 structural hepatitis G virus (HGV⁄GBV-C) protein [E2(7–26) and E2(279–298), respectively] has been characterized. Both peptides are water soluble but associate spontaneously with bilayers, showing higher affinity for anionic than zwitterionic membranes.

11p awards 06-04-2013 38 2   Download

The spontaneous acquisition of resistance to a variety of unrelated cytotoxic compounds has important implications in medical treatment of infectious diseases and anticancer therapy. In the yeast Saccharomyces cerevisiaethis pheno-menon is caused by overexpression of membrane efflux pumps and is called pleiotropic drug resistance. We have found that allelic forms of the genes for the transcription activators Pdr1p and Pdr3p, designated PDR1-12and PDR3-33,respectively, mediate resistance to diazaborine....

8p dell39 03-04-2013 38 3   Download

We examined the effects ofEscherichia coliribosomal pro-tein S12 mutations on the efficiency of cell-free protein syn-thesis. By screening 150 spontaneous streptomycin-resistant isolates from E. coliBL21, we successfully obtained seven mutants of the S12 protein, including two streptomycin-dependent mutants. The mutations occurred at Lys42, Lys87, Pro90 and Gly91 of the 30S ribosomal protein S12. We prepared S30 extracts frommutant cells harvested in the mid-log phase.

8p dell39 03-04-2013 38 5   Download

We have previously shown that lovastatin induces apoptosis in spontane-ously immortalized rat brain neuroblasts. Focal adhesion proteins and pro-tein kinase Cd(PKCd) have been implicated in the regulation of apoptosis. We found that lovastatin exposure induced focal adhesion kinase, Crk-asso-ciated substrate (p130 Cas ), PKCdcleavage and caspase-3 activation in a con-centration-dependent manner. Lovastatin effects were fully prevented by mevalonate.

13p dell39 27-03-2013 41 3   Download