Step by step

The purpose of this research is to model the factors affecting a production and inventory system that combines returns and remanufacturing, and to evaluate effective control strategies in order to improve the performance of the system. In this regard, the main steps adopted to conduct the modelling process initially involved an investigation of reverse logistics and closed loop supply modelling as reported in the literature. An investigation of previous models developed contributed to our research by increasing the knowledge required to conduct the modelling.

292p runthenight04 02-02-2023 16 2   Download

This thesis provides a first step towards understanding how fear of crime, perceived risk, perceptions of unsafety, and avoidance behavior reciprocally and positively influence each other; and how personal characteristics and community-related factors influence threat of victimization within a nonrecursive frame of reference, laying the groundwork and advancing conceptual foundations upon which threat of victimization can be assessed.

270p runthenight04 02-02-2023 4 3   Download

This thesis contributes to the existing literature in the following ways: First, presenting a systematic study with empirical evidence on the functioning and quality of corporate governance and its impact under the contractual form of FMC. Second, this research represents a step forward from the extant studies focusing on how board characteristics and composition in fund companies by investigating a wider range of relevant governance mechanisms that affect board effectiveness which other studies have not attempted.

203p runthenight04 02-02-2023 10 4   Download

The research aim is to improve of students‘ pronunciation skills using phonetic transcription. In order to achieve the aim, the study followed these following steps: identifying difficulties of the students in pronouncing vowel sounds, planning the action, implementing the action and evaluating the improvements of the students after using phonetic transcription. In addition to that, the study also investigates the students‘ opinion about the use of phonetic transcription in pronunciation learning.

81p closefriend09 16-11-2021 25 5   Download

In this thesis, I have developed a low-cost, simple and one-step approach to synthesize MnO2/graphene composite with enhanced electrochemical performance. MnO2/graphene composite was prepared via a plasma-assisted electrochemical exfoliation method with an electrolyte solution made of KMnO4 precursor.

60p closefriend03 13-10-2021 13 2   Download

This research aims to address the difficult situation of water allocation problem in Ba river basin by analyzing the relationship between relative water availability and economic benefit from key-water using sectors. Four following steps were taken to meet the research objective: establishing the water allocation problem for Ba river basin; developing a hydro-economic model applied for Ba river basin; applying the developed model to assess potential.

27p dolphintaletale 23-04-2021 30 6   Download

The blends based on polyvinyl chloride (PVC), nitrile-butadiene rubber (NBR), natural rubber (NR) and polyethylene (PE) were made by three different methods. The mechanical properties of these blends in dependence of mixing time and temperature were characterized. The result showed that the two-step blending method, where PVC and NBR were first mixed together and then blended with NR and PE, is the best one to prepare blends with high mechanical properties.

6p 12120609 01-06-2020 16 0   Download

It was demonstrated that Poly(p-Xylylene) (PPX) could be prepared from α,α’-Bis(Alkoxy or Aryloxy) –p-Xylenes via chemical vapor decomposition (CVD)- method. This is one-step process and there are side products by the CVD-process. This effect depends both on the CVD- condition and the properties of the starting monomer. The structure and thermal behavior of the material were characterized by FTIR, UVvis spectroscopy, elemental analysis, wide-angle X-ray diffraction, DTA and DSC.

14p 12120609 01-06-2020 17 1   Download

This article draws a state of knowledge of the dissolution of uranium dioxide in nitric acid media. The chemistry of the reaction is first investigated, and two reactions appear as most suitable to describe the mechanism, leading to the formation of monoxide and dioxide nitrogen as reaction by-products, while the oxidation mechanism is shown to happen before solubilization.

13p christabelhuynh 30-05-2020 7 1   Download

DFT calculations indicate that the decomposition reaction of nitroethyl benzoates in the presence of 1,3-dimethylimidazolium cation takes place much faster than in the case of the non-catalyzed process. Additionally, our calculations suggest one-step polar mechanism of title reactions.

8p tocectocec 25-05-2020 13 1   Download

The aim of this study is to describe the problems faced by the steel industry as well as the necessary steps which should be taken for improvement of the productivity of STS machine and also it has made contribution to Bhilai Steel Plant by its growth and prosperity.

9p tohitohi 19-05-2020 9 0   Download

The study object of the thesis is the implementation of CSR of SMIEs in Thai Nguyen province for employees. CSR has various contents such as environmental protection, CSR for consumers, CSR for the community, CSR for employees. In the scope of this dissertation, the author analyzes the implementation of CSR of SMIEs in Thai Nguyen province through the steps in the process such as by working out the plan, organizing the implementation, building contents of implementing and evaluating the implementation.

26p quenchua 28-09-2019 31 4   Download

The aim of this thesis is to study crack-induced change in natural frequencies and to develop a procedure for detecting cracks in stepped beams by measurement of natural frequencies.

27p xacxuoc4321 11-07-2019 33 3   Download

TDD & ATDD includes TDD Steps, Write one unit test, Build or add to the object under test until everything compiles, Watch the test fail, Make all the tests pass the object under tests, Refactor mercilessly.

7p maiyeumaiyeu28 13-01-2017 23 1   Download

A microporous+mesoporous material composed of MCM-41 and MFI was produced by a two-step synthetic process. The solid, called 99MMM-1,:: was characterized by X-ray di4raction (XRD), N2 physisorption, and transmission electron microscopy (TEM).

7p tuananhhumg 04-11-2013 59 2   Download

Tài liệu Giải pháp cơ bản online marketing cho doanh nghiệp này không có ý muốn “chỉ” cho bạn cách làm thế nào để thực hiện các biện pháp online marketing step by step có hiệu quả cao nhất mà đơn giản là đưa ra các giải pháp để bạn hoặc doanh nghiệp tham khảo và tự đánh giá. Mời bạn đọc cùng tham khảo.

8p mountain123123 04-06-2013 202 47   Download

The synthesis of 10 new phosphoenolpyruvate (PEP) analogues with modifications in the phosphate and the carboxylate function is described. Included are two potential irreversible inhibitors of PEP-utilizing enzymes. One incorporates a reactive chloromethylphosphonate function replacing the phosphate group of PEP. The second contains a chloromethyl group substituting for the carboxylate function of PEP. An improved procedure for the preparation of the known (Z)- and (E)-3-chloro-PEP is also given.

11p system191 01-06-2013 35 3   Download

Oxford Centre for Molecular Sciences and the Dyson Perrins Laboratory, Oxford, UK; 2Department of Biochemistry, National Defence Medical Centre, Taipei, Taiwan; 3Department of Pharmacy and Pharmacology, The University of Bath, UK Deacetoxycephalosporin C synthase (DAOCS) catalyses the oxidative ring expansion of penicillin N, the committed step in the biosynthesis of cephamycin C by Streptomyces clavuligerus.

5p system191 01-06-2013 24 3   Download

The clinically used beta-lactamase inhibitor clavulanic acid is produced by fermentation of Streptomyces clavuligerus. The orf6 gene of the clavulanic acid biosynthetic gene cluster in S. clavuligerus encodes a protein that shows sequence homology to ornithine acetyltransferase (OAT), the fifth enzyme of the arginine biosynthetic pathway. Orf6 was overexpressed in Escherichia coli (at  15% of total soluble protein by SDS/PAGE analysis) indicating it was not toxic to the host cells. The recombinant protein was purified (to 95% purity) by a one-step technique.

8p research12 01-06-2013 33 5   Download

Recombinant human kynureninase (L-kynurenine hydrolase, EC 3.7.1.3) was purified to homogeneity (60-fold) from Spodoptera frugiperda (Sf9) cells infected with baculovirus containing the kynureninase gene. The purification protocol comprised ammonium sulfate precipitation and several chromatographic steps, including DEAE–Sepharose CL-6B, hydroxyapatite, strong anionic and cationic separations. The purity of the enzyme was determined by SDS/ PAGE, and the molecular mass verified by MALDI-TOF MS. The monomeric molecular mass of 52.4 kDa determined was 99.99% of the predicted molecular mass.

6p research12 01-06-2013 49 5   Download