Sustainable Development Strategies of Manufacturing in Jiangsu Based on the Constraints of Resources and Environment

AbstractBased on the low carbon economy and the theory of grey correlation, the paper puts forward that the industrial development in Jiangsu has been associated with energy consumption in large sum and the high energy -consuming industries is still taking up a large proportion. The correlation between the energy consumption of major industrial enterprises and the “three wastes” emissions is large. Besides, the energy consumption has significant influence on the environmental quality. By analyzing the environment and resource bottleneck on the development of the manufacturing in Jiangsu, it puts forward a series of sustainable development strategy for the promotion of the manufacturing.© 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of RIUD

The Analysis of Factors and Levels Associated with Lecturers’ Motivation and Job Satisfaction in University of Rwanda

It is difficult to expect good performance of students in universities without having a motivated lecturing staff. The study aimed to correlate the levels of lecturers’ motivation and job satisfaction and find out factors associated with. A cross-sectional study was conducted between February and April 2016. Structured online questionnaires of the content validity index of 0.9625 for Lecturers’ motivation and job satisfaction were used for data collection.  Seventy Lecturers from university of Rwanda participated in study. Collected data were organized and encoded into computer using the statistical package for social sciences (SPSS) 19th version. Frequencies, percentages, means and Pearson’ Linear Correlation Coefficient were used to analyze data. Means were interpreted as poor, fair, satisfactory and very satisfactory.  Lecturers’ motivation was fair and firstly affected by salary, classroom environment, incentives &promotions, code of conduct, social factors and cheer love of career. Job satisfaction was fair and highly affected by working conditions, financial rewards, workload and stress level, relation with supervisors, opportunity for advancement and respect co-workers. The correlation between levels of lecturers’ motivation and job satisfaction was significant with positive relationship of 82.1%. Lecturers’ Motivation and Job satisfaction were found to be low; all analyzed factors would be taken into consideration. Keywords: Lecturers’ motivation; Job satisfaction; Professional development; Learning environment

Coherent manipulation of spin wave vector for polarization of photons in an atomic ensemble

We experimentally demonstrate the manipulation of two-orthogonal components of a spin wave in an atomic ensemble. Based on Raman two-photon transition and Larmor spin precession induced by magnetic field pulses, the coherent rotations between the two components of the spin wave is controllably achieved. Successively, the two manipulated spin-wave components are mapped into two orthogonal polarized optical emissions, respectively. By measuring Ramsey fringes of the retrieved optical signals, the \pi/2-pulse fidelity of ~96% is obtained. The presented manipulation scheme can be used to build an arbitrary rotation for qubit operations in quantum information processing based on atomic ensembles

Investigation of the Applications of Nanofibrillated Cellulose in the Oil Industry

Polymers, including biopolymers and synthetic polymers, are extensively used in oil industry. However, problems exist in these polymer fluids. Severe formation damage can be caused by most polymers. Moreover, thermal stability limits the applications of biopolymer-based fluids at high temperatures. Here, four nanofibrillated cellulose (NFC) have been evaluated as viscosifiers to prepare aqueous fluids, and compared to guar-based fluids. The rheological properties and solid suspending ability of NFC-based fluids have been studied with the effects of temperature and salts. Formation damage of the new type of fluids in different formations has been evaluated. Degradation studies have been performed using different types of breakers. The viscosity measurements have shown that the NFC-based fluids were stable as high as 350°F. For non-charged NFC, the fluids had a high tolerance to KCl and CaCl2. Moreover, NFC-based fluids had a good solid suspending ability, which out-performanced guar-based fluids. Coreflood tests were run using cores of different permeability. As for NFC-based fluids, the regained permeabilities were 85% or higher of the initial permeabilities in low-permeability cores, suggesting that NFC caused a slight damage. However, guar and HPG fluids caused much more damage than NFC fluids under same conditions. Severe damage was caused to high-permeability cores (about 400 md or more) when treated by NFC-based fluids. The damage degree was related to the size of NFC fibers. Fibers of smaller sizes can invade the core and plug the pore throats more easily. However, the new fluids were successfully degraded by different breakers, indicated by the significant decrease in the fluid viscosity. HPLC analyses have shown that the new viscosifiers can be mostly degraded into soluble products with low viscosity, which can be flowed back after the treatment. This work has evaluated four nanofibrillated cellulose fibers as viscosifiers in fluids. These new fluids have better thermal stability and solid suspending ability than guar-based fluids under the same conditions. High regained permeability of low-permeability cores can be maintained when treated by the new fluids. Severe damage was caused in high-permeability cores, however, the damage can be removed because the fluids were degraded successfully