Cervus albirostris (white-lipped deer) is an endemic species in China. As the name implies, C. albirostris has a characteristic pure white marking around their mouth and on the underside of the throat.
View Article and Find Full Text PDFIn the task of discriminating between nonorthogonal quantum states from multiple copies, the key parameters are the error probability and the resources (number of copies) used. Previous studies have considered the task of minimizing the average error probability for fixed resources. Here we introduce a new state discrimination task: minimizing the average resources for a fixed admissible error probability.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
December 2015
A strictly anaerobic, Gram-stain-positive bacterium, designated FW431T, was isolated from a mud cellar used for producing strong aromatic Chinese liquors. The strain was able to produce butanoic acid, an important component of the aroma style of Chinese liquors. Cells of strain FW431T were straight or slightly curved rods with a polar endospore and peritrichous flagella.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
October 2014
Although the radical pair (RP) model is widely accepted for birds' orientation, the physical mechanism of it is still not fully understood. In this paper we consider the RP model in the total angular-momentum representation and clearly show a detailed mechanism for orientation. When only the vertical hyperfine (HF) coupling component is considered, analytical expressions of singlet yield angular profiles are obtained with and without considering the radio frequency field, and when the horizontal HF coupling components are considered, a numerical calculation of the singlet yield is given.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
May 2014
We consider a model of an optical cavity with a nonequilibrium reservoir consisting of a beam of identical two-level atom pairs (TLAPs) in the general X state. We find that coherence of multiparticle nonequilibrium reservoir plays a central role on the potential work capability of the cavity. We show that no matter whether there are quantum correlations in each TLAP (including quantum entanglement and quantum discord) or not, the coherence of the TLAPs has an effect on the work capability of the cavity.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
September 2013
Migratory birds can utilize the geomagnetic field for orientation and navigation through a widely accepted radical-pair mechanism. Although many theoretical works have been done, the available experimental results have not been fully considered, especially the temporary disorientation induced by the field which is increased by 30% of the geomagnetic field and the disorientation of the very weak resonant field of 15 nT. In this paper, we consider the monotonicity of the singlet yield angular profile as the prerequisite of direction sensitivity, and find that for some optimal values of the hyperfine coupling parameters (that is, the order of 10^{-7}∼10^{-6} meV) the experimental results available so far can be satisfied.
View Article and Find Full Text PDFOur objectives were to determine if porcine serum could be enriched with selenium (Se) by feeding pigs with high concentrations of dietary Se and if the Se-biofortified serum inhibited proliferation of 3 types of human cancer cells. In Expt. 1, growing pigs (8 wk old, n = 3) were fed 0.
View Article and Find Full Text PDFHepatobiliary Pancreat Dis Int
April 2012
Background: Systemic administration of CTLA4Ig has been applied in inducing immunological tolerance of hepatocyte implants, but has potential for systemic immune inhibition. This study was designed to induce hepatocyte immunological tolerance by locally expressing CTLA4Ig in an attempt to improve the effectiveness of cell transplantation.
Methods: A normal human liver cell line (L02) was transfected with adenovirus vector containing the CTLA4Ig gene (Ad-CTLA4Ig-EGFP) in vitro, and the expression of CTLA4Ig by transfected cells was assessed by fluorescent imaging and immunocytochemical staining.
Although the strategy of "Cre/LoxP-based reversible immortalization" holds great promise to overcome the cellular senescence of primary cell cultures for their further use, a secondary gene transfer for Cre expression is usually utilized to trigger the excision of the immortalizing genes in a large number of cells, thus presenting a formidable hurdle for large-scale application. We modified the strategy by utilizing a tricistronic retroviral vector pLCRSTP, in which Cre-ER, simian virus 40 large T antigen (SV40LTAg) oncogene, and a reporter gene were flanked by the same pair of LoxA sites. Five immortalized rat pancreatic β cell clones transduced with pLCRSTP, and six immortalized rat pancreatic β cell clones co-transduced with pLCRSTP and another vector encoding the human telomerase reverse transcriptase (hTERT) gene, were obtained, respectively.
View Article and Find Full Text PDFIn this study, a putative esterase, designated EstMY, was isolated from an activated sludge metagenomic library. The lipolytic gene was subcloned and expressed in Escherichia coli BL21 using the pET expression system. The gene estMY contained a 1,083 bp open reading frame (ORF) encoding a polypeptide of 360 amino acids with a molecular mass of 38 kDa.
View Article and Find Full Text PDFZhonghua Gan Zang Bing Za Zhi
June 2010
Objectives: To study the evolution of HBV quasispecies under the pressures of lamivudine (LAM) - entecavir (ETV) sequential therapy and its clinical significance.
Methods: Consecutive serum samples from 2 patients underwent LAM-ETV sequential therapy were extensively studied for HBV quasispecies composition and evolution, using PCR-cloning-sequencing method. Maximum likelihood trees were built to analyze the genetic relationship between representative sequences.
To study the effect of selenium-enriched yeast (SeY) level on selenoprotein genes expression and the relation between gene expression and antioxidant status and meat quality, 30 selenium (Se)-depleted pigs (7-week old, 10.30±0.68 kg) were randomly divided into 3 groups and fed a basal diet plus 0, 0.
View Article and Find Full Text PDFCarbon nanotubes (CNTs) have been synthesized and produced on large scale for their wide application. They have high absorption ability to organic contaminants (such as benzene) and can form CNTs-benzene combination with benzene. In this article, the acute pulmonary toxicity, induced by multiwall carbon nanotubes (MWCNTs), benzene, and their combination, was studied by administrating the three test materials into mice lungs via intratracheal instillation.
View Article and Find Full Text PDFExpression and function of selenoproteins in endocrine tissues remain unclear, largely due to limited sample availability. Pigs have a greater metabolic similarity and tissue size than rodents as a model of humans for that purpose. We conducted 2 experiments: 1) we cloned 5 novel porcine selenoprotein genes; and 2) we compared the effects of dietary selenium (Se) on mRNA levels of 12 selenoproteins, activities of 4 antioxidant enzymes, and Se concentrations in testis, thyroid, and pituitary with those in liver of pigs.
View Article and Find Full Text PDFSelective adsorption of active ingredients liquiritin and isoliquiritin from Glycyrrhiza uralensis Fisch with multi-walled carbon nanotubes (MWNTs) has been studied. Distribution coefficients of liquiritin between ethanol solvent and r-MWNTs or o-MWNTs in 293K is 37.5 and 43.
View Article and Find Full Text PDFThe pathological lesions induced by multiwalled carbon nanotubes (MWCNTs) in bronchi and alveoli of mice were studied by intratracheal instillation and inhalation. In instillation groups, the dose was 0.05 mg MWCNTs/mouse.
View Article and Find Full Text PDFZhonghua Gan Zang Bing Za Zhi
March 2006
Aim: To clarify the pathogenesis of ductular proliferation and its possible association with oval cell activation and hepatocyte regeneration.
Methods: Immunohistochemical staining and image analysis of the ductular structures in the liver tissues from 11 patients with severe chronic hepatitis B and 2 healthy individuals were performed. The liver specimens were sectioned serially, and then cytokeratin 8(CK8),CK19,OV6,proliferating cell nuclear antigens(PCNA), glutathione-S-transferase (GST), alpha-fetal protein (AFP) and albumin were stained immunohistochemically.
Zhonghua Gan Zang Bing Za Zhi
January 2006
Objectives: To investigate the quasispecies dynamics of hepatitis B virus (HBV) during the course of exacerbation and resolution of chronic hepatitis B in a patients.
Methods: Five serum samples were collected from a patient with two episodes of exacerbation and resolution of chronic hepatitis B. A method of PCR-TA cloning-conformation sensitive gel electrophoresis (CSGE)-sequencing was performed to study the dynamic changes of HBV quasispecies in basal core promoter (BCP), precore and core regions of HBV genome.
Zhonghua Gan Zang Bing Za Zhi
June 2003
Objective: To observe the evolution and differentiation of hepatic oval cells after transplanted into the spleens of homogenous rats, providing experimental data for treating hepatic failure with hepatic stem cells.
Methods: A two-step perfusion procedure was used to separate hepatic parenchymal cells from nonparenchymal cells. Then the suspension of nonparenchymal cells was centrifuged in Percoll gradients.
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