We developed an artificial blood vessel implanted 3D microfluidic system for reproducing vascular functions and transvascular migration of tumor cells. Based on this model, the adhesion cells across have been well reproduced.

Under bifunctional squaramide and thiourea organocatalysis, a series of vicinally bis(trifluoromethyl)-substituted 3,3′-pyrrolidinyl spirooxindoles were successfully synthesized via 1,3-dipolar cycloaddition reactions 3-(trifluoroethylidene)oxindoles with diethyl 2-((2,2,2-trifluoroethyl)imino)malonate N-(2,2,2-trifluoroethyl)isatin ketimines. The highlight this protocol is the efficient construction pyrrolidine unit spirooxindoles, including multiple contiguous stereogenic centres, in...

Microfluidic devices with integrated minisolenoids, microvalves, and channels have been fabricated for fast low-volume immunoassay using superparamagnetic beads well-known surface bioengineering protocols. A magnetic reaction area can be formed in the microchannel, featuring a high surface-to-volume ratio low diffusion distances reagents to bead surface. Such method has obvious advantage of easy implementation at cost. Moreover, minisolenoids switched on or off field intensity tuned demand....

This article examines whether the effect of hierarchical pay structures on firm value is different between firms in which CEO not highest paid member top management team and those receives pay. We find that difference VPs benefits only when team. In where does receive pay, gaps have a negative impact value. The also finds financial distress, family ownership, size R&D intensity increase likelihood being manager, whereas entrenchment power along with dividend payout decrease this likelihood.

The photodegradation behaviors of propranolol(PRO) in solutions containing fulvic acid were studied under different light source irradiation. PRO degraded fast by direct photolysis UV-vis UV process involved the triplet state PRO(3PRO*) and self –sensitization decomposition. Under simulated solar irradiation, photodegraded through 3PRO* decomposition mainly. was suppressed SRFA PLFA. PLFA promoted effects increased with increasing FA concentration. Compared SRFA, owns higher reactive oxygen...

Abstract In order to solve the problems of adhesion soil and high resistance in traditional subsoiling shovel operation, a bionic energy-saving with viscosity reducing chisel is designed based on polygon geometry structure pangolin scales. this paper, modeling analysis type carried out by using 3D software. According simulation data, we optimize key structural parameters, try produce deep scarifier resistance. study performance shovel, L9 (3 4 ) orthogonal test was field number surfaces,...

In this work, a double heterojunction Silicon solar cell by NiO/Si and Si/TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> interfaces was implemented. The liquid-phase deposited NiO TiO could be controlled as thin 5 nm. exhibit 0.07 eV relative hole barrier height to n-Si, which is an appropriate p-type junction n-type Si. With NiO/n-Si/TiO device structure, the high short-circuit current density open-circuit voltage up 28 mA/cm <sup...

Third batch colleges are the products of popularity and rapid development higher education.Through taking advantage premium sufficient educational resources parent universities combining privately-funded to absorb social capital, they have become a new form.The production third has solved contradiction education that demand exceeds supply.They an indispensable part exert irreplaceable function.This paper collects related data national undergraduate institutes from 2008 2014 analyzes problems...

This paper examines the effect of hierarchical pay structures on firm value in firms where CEOs are not highest paid members top management teams. We find that difference between CEO and VPs benefits only when is member team. When does receive pay, spreads centrality both have a negative impact performance. The also finds financial distress, family ownership, size R&D intensity increase likelihood being manager, whereas entrenchment power along with dividend payout decrease this likelihood.

In order to meet the fertilizer agronomic requirements of sugarcane in hot areas South China, using method notched disk ditching design a and fertilizing machine. The static equilibrium equation is established by having force analysis that disc plow cuts leaves, diameter structural parameters are determined. results field test show working performance each component machine stable, it can primely cut soil, ditch prevent winding fields with lot weeds or meets China.

Innovative development has always been an important policy tool for accumulating effective intelligent property to the desirability of all makers in China, even more so now as trade war seriously threatened Chinese economy. To understand efficacy regional innovative policies, we proposed dynamic two-stage slacks-based measure (SBM) model with carry-over and intermediate variables, highlighting importance status invention patent, granted patent force, overall performance purposed development,...

Abstract Policies about sustainable development are carrying out in China. From two perspectives to study whether green finance promoted the economy Guangdong or not by grey correlation analysis. The results of using Guangdong’s financial data were supported this hypothesis, while national hypothesis. reason is that even Guangdong, Hong Kong and Macao Greater Bay area one most developed regions China, which shows a gatherring effect, resources whole country flow into continuously. That play...

Abstract Aiming at the problems of low efficiency and high energy consumption in process sugarcane planting, as well soil compaction hardening caused by tractor repeatedly entering field rolling field, this paper designed a kind combined preparation machine with reasonable structure conforming to continuous planting conditions China optimizing combination key components. The drives into once, which can complete processes deep loosening, loosening head sugarcane, ridging preparation. In...