Pure compounds extracted and purified from natural sources are crucial to lead discovery drug screening. This study presents a novel two-dimensional hyphenation of expanded bed adsorption chromatography (EBAC) high-speed countercurrent (HSCCC) for extraction purification target medicinal plants in single step. The EBAC HSCCC were hyphenated via six-port injection valve as an interface. Fractionation ingredients Salvia miltiorrhiza Rhizoma coptidis was performed on the system verify its...

The aim is to investigate the association between nutritional status and clinical picture of pulmonary tuberculosis (PTB).A total 613 patients in Weifang city, Shandong province, China were included. Clinical history, anthropometry, nutritionally relevant indicators including serum protein albumin, hemoglobin lymphocyte count measured. Adjustments made for confounders multivariable logistic models where activity (clinical symptoms signs, sputum-smear tests or chest computerized tomography...

The development of antibacterial dressings has attracted much attention to address the disordered wound healing caused by bacterial infection. Constructing that have desirable activity and could promote is important for infected repair. Inspired role key regulator collagen fibrils with D-periodic functional domains in physiological process, we developed an healing-promoting fibril a structure highly similar natural ECM inherent simultaneous strategy reconstitution agent ε-polylysine (ε-PL)...

Modulation of collagen fibrillogenesis by varying the degrees chitosan deacetylation for preparation co-assembled biomimetic fibrils to enhance hemostasis.

Abstract Natural polymer aerogel is a candidate material with broad application prospects in the field of building insulation because its lightweight, low thermal conductivity, and biodegradability. However, poor mechanical properties easy combustion greatly limit development. In this work, magnesium hydroxide (MH) was synthesized situ agar (AG)/polyvinyl alcohol (PVA) composites using oxide as raw material. Furthermore, one‐dimensional rod‐like nanoclay palygorskite (Pal) introduced into...

Polymethylmethacrylate (PMMA) modified poly(vinylidene fluoride) (PVDF) hollow fiber ultrafiltration membranes were prepared by wet spinning method using polyvinylpyrrolidone (PVP) as pore-foaming agent and mixture of dimethyl formamide (DMF)/methyl ethyl ketone (MEK) solvent. The effects PVDF, PMMA, PVP, solvent ratios in the solution on permeation properties formed studied. results showed that performance membrane is best with a pure water flux 117 L/m2•h rejection rate 82% to bovine serum...

Carboxymethyl cellulose (CMC)-based aerogels with low density, thermal conductivity, and biodegradability are promising candidates for environmentally friendly heat-insulating materials. However, the application of CMC-based as insulation materials in building exterior walls is limited by high water sensitivity, poor mechanical properties flammability these aerogels. In this work, a simple hydration method was used to generate magnesium hydroxide (MH) directly from CMC/polyvinyl alcohol...

Multimedia broadcast/multicast service (MBMS) is an important part of the UTRAN evolution and supports downlink streaming download-and-play type services to large groups users. For enhanced MBMS (E-MBMS) under 3GPP long term (LTE) system, there are two ways transmissions being performed: multi-cell single-cell transmissions. One requirement identified be supported that capability network detect at least one user interested receiving given in cell which belongs above scenarios. It significant...

Polyacrylonitrile (PAN) hollow fiber ultrafiltration membranes were prepared by wet spinning method using lithium chloride (LiCl) or calcium (CaCl2) as porogen and dimethyl formamide (DMF) solvent. The effects of PAN/LiCl PAN/CaCl2 ratios in the solution on permeation properties formed studied.

Malnutrition is associated with pulmonary tuberculosis (PTB). The aim of this study to investigate the association between persistent malnutrition and effect PTB treatment.A total 915 patients were included. Baseline demographic information, anthropometry, nutritional indicators measured. treatment was assessed by combinations clinical manifestations, sputum smear, chest computerized tomography, gastrointestinal symptoms, indexes liver function. Persistent considered when one or more lower...

Cognitive radio (CR) technology has been proposed as an effective approach to increase the spectrum utilization. In this work, considering that most, if not all, existing channel models are applicable typical CR application scenarios due low transmit/receive antenna height, short communication/interference distance, and/or frequency range, extensive measurements have carried out on a downtown campus in Beijing, China. Channel developed specifically for devices with low-height antennas...

Multi-cell transmission in single frequency networks (SFN)area for MBMS can be used to improve the system performance. This paper proposes a novel virtual hybrid automatic repeat request (V-HARQ) mechanism multi-cell UMTS networks, by which multiple signals like retransmission versions of HARQ unicast mode from different cells received and combined at receiver side. Moreover, NAK implosion problem resolved with mechanism. By means performance analysis simulation results, significant...

The crystal of the title complex, is monoclinic with space group Pc. cell parameters a=0.9361(2),b=1.0519(3),c=1.2028(2)nm,β=91.01(2)?,V=1.1843(4)nm3. Z=4.final R=0.061.Zinc atom coordinated in a tetrahedron arrangement to four non-esterified oxygen atoms.Two adjacent zinc atoms are connected by "O-P-O" bridge groups, forming an infinite one-dimensional chain polymer.The infrared spectra indicates formation O-P-S groups some important bands have been interpreted.

The crystal of the title complex, is monoclinic with space group Pc. cell parameters a=0.9361(2),b=1.0519(3),c=1.2028(2)nm,β=91.01(2)?,V=1.1843(4)nm3. Z=4.final R=0.061.Zinc atom coordinated in a tetrahedron arrangement to four non-esterified oxygen atoms.Two adjacent zinc atoms are connected by "O-P-O" bridge groups, forming an infinite one-dimensional chain polymer.The infrared spectra indicates formation O-P-S groups some important bands have been interpreted.