scholarly journals Article format and high rejection rate

2019 ◽  
Vol 15 (6) ◽  
pp. 737-737
Author(s):  
Chang-Ju Kim
Keyword(s):  
Rejection Rate ◽  
High Rejection Rate ◽  
High Rejection

β-SiAlON ceramic membranes modified with SiO2 nanoparticles with high rejection rate in oil-water emulsion separation

2019 ◽  
Vol 45 (4) ◽  
pp. 4237-4242 ◽  
Author(s):  
Dong-Shuai Zhang ◽  
Hamidreza Abadikhah ◽  
Jun-Wei Wang ◽  
Lu-Yuan Hao ◽  
Xin Xu ◽  
...  
Keyword(s):  
Rejection Rate ◽  
Sio2 Nanoparticles ◽  
Ceramic Membranes ◽  
Water Emulsion ◽  
Sialon Ceramic ◽  
Emulsion Separation ◽  
Oil Water ◽  
High Rejection Rate ◽  
High Rejection

High Rejection Rate during Calcineurin Inhibitor-Free and Early Steroid Withdrawal Immunosuppression in Renal Transplantation

2006 ◽  
Vol 82 (9) ◽  
pp. 1221-1223 ◽  
Author(s):  
Marielle A. C. J. Gelens ◽  
Maarten H. L. Christiaans ◽  
Ernst L. W. van Heurn ◽  
Ella P. M. van den Berg-Loonen ◽  
Carine J. Peutz-Kootstra ◽  
...  
Keyword(s):  
Renal Transplantation ◽  
Calcineurin Inhibitor ◽  
Rejection Rate ◽  
Steroid Withdrawal ◽  
High Rejection Rate ◽  
High Rejection

Costs associated with recognition and rejection of parasitic eggs in two European passerines

Behaviour ◽  
2002 ◽  
Vol 139 (5) ◽  
pp. 629-644 ◽  
Author(s):  
Bård Stokke ◽  
◽  
◽  
◽  
Keyword(s):  
Rejection Rate ◽  
Brood Parasite ◽  
Selective Pressures ◽  
Mixed Support ◽  
The Common ◽  
High Rejection Rate ◽  
Recognition Errors ◽  
High Rejection ◽  
Rejection Rates

AbstractMany avian brood parasite hosts accept parasitic eggs even though successful parasitism frequently is detrimental to their own reproduction. Such behaviour seems suboptimal, but has been explained by the existence of opposing selective pressures operating against the evolution of appropriate host defence. Costs associated with rejection and recognition of eggs are central topics in this respect. Here, we report the occurrence of such costs in two European passerines (chaffinches and blackcaps) that are good rejecters of foreign eggs, even though the common cuckoo does not presently use them as hosts. Since high rejection rates are maintained in the absence of parasitism, we predicted that few recognition errors are made by these species. We tested this prediction by monitoring the occurrence of such errors in both experimentally parasitised and non-parasitised host clutches. We found support for the prediction, as our results show that recognition errors are at best rare events in these two species. We discuss the role of intraspecific brood parasitism as well as other explanations for the retention of a high rejection rate in these species. Various studies have reported mixed support for the occurrence of recognition errors among cuckoo hosts, and we consider other explanations for the existence of both acceptors and rejecters of foreign eggs in host populations.

Study on Enhancement of Quality Level through a Lean Approach in an Original Equipment Manufacturer

2019 ◽  
Vol 43 ◽  
pp. 145-156
Author(s):  
S. Nallusamy ◽  
S. Seenuvasa Rajan ◽  
S. Sundar ◽  
Gautam Majumdar
Keyword(s):  
Manufacturing Industry ◽  
Technological Development ◽  
Rejection Rate ◽  
Present Condition ◽  
Quality Level ◽  
Customer Demand ◽  
Original Equipment Manufacturer ◽  
Equipment Manufacturer ◽  
High Rejection Rate ◽  
High Rejection

In the present condition, customer demand has increased gradually due to technological development and globalisation in this world. So this made the industrialist to deliver the products at right quantity at right place at right time with shorter lead time. But due to high rejection rate the industries fails to meet the customer demand which in turn reduces the customer satisfaction. Hence, this research an attempt was made to reduce the defects of casting components in an original equipment manufacturer. The study was carried out in a foundry of brake drum manufacturing industry. The problem was inside that the industry could not meet the customer demand due to high rejection rate and the major contributor for high rejection is found to be sand drop. Hence, proposed solutions have been implemented to achieve the objectives. After implementation of proper lean tools it was observed from the results that, the rejection rate was reduced by about 4% and the quality level was increased by about 4.4%.

Thin Film Nanofibrous Composite Ultrafiltration Membrane for Oil Removal from Oilfield Wastewater

2013 ◽  
Vol 669 ◽  
pp. 99-102 ◽  
Author(s):  
Xiong Li ◽  
Li Li Wang ◽  
Yin Yang ◽  
Hao You ◽  
Wen Cun Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Mixed Solvent ◽  
Rejection Rate ◽  
Solvent System ◽  
Ultrafiltration Membrane ◽  
Poly Vinyl Alcohol ◽  
Electrospinning Technique ◽  
Operation Pressure ◽  
High Rejection Rate ◽  
High Rejection

Nanofibrous substrate composite ultrafiltration membrane consisted of polyacrylonitrile (PAN) electrospun scaffold which was used as the substrate, and a thin crosslinked poly(vinyl alcohol) (PVA) barrier layer which was prepared by electrospinning technique combined with mixed solvent treatment. The thickness of PVA nanofibrous top layer was controlled by changing the electrospun depositing time. Through immersing PVA/PAN double-layer mats into water/acetone mixed solvent system, the PVA nanofibrous top layer was swollen to merge imperceptibly into an integrated barrier film on the surface of PAN substrate, and then chemically crosslinked by glutaraldehyde. The resultant PVA/PAN thin film nanofibrous composite (TFNC) membrane has high rejection rate (99.6%), high flux (410.5l/m2h) and good anti-fouling characteristic at very low operation pressure (0.2MPa) for separating oil from the oilfield wastewater. Additionally, the removal of TDS, suspended matter, total iron and sulfate reducing bacteria (SRB) showed high rejection rate with relatively stable PH.

The Utilization of The Rorschach Test in A Case-Controlled Study

Cephalalgia ◽  
1986 ◽  
Vol 6 (2) ◽  
pp. 87-93 ◽  
Author(s):  
Vincenzo Guidetti ◽  
Gastone Mazzei ◽  
Salvatore Ottaviano ◽  
Marina Pagliarini ◽  
Anna Paolella ◽  
...  
Keyword(s):  
Rejection Rate ◽  
Controlled Study ◽  
Rorschach Test ◽  
Psychomotor Activity ◽  
Poor School Performance ◽  
History Of ◽  
Migraine Group ◽  
Definite Difference ◽  
High Rejection Rate ◽  
High Rejection

The Rorschach test was administered to 58 children of normal intelligence aged 7–14 years with a history of common migraine of at least 12 months and to a group of controls matched for age, sex, and IO. The Rorschach test was scored blindly. The migraine group was characterized by marked intellectual inhibition with poor school performance and low response rates; inhibition of psychomotor activity and aggressiveness, shown by content analysis and by the presence of kinesthetic shock; inhibition of affect (ratio M/sum C); ineffective use of mechanisms of defence against anxiety (F-); prevalence of phobic features and massive use of repression, indicated by the high rejection rate and shock at red colour. The differences from the controls were significant at the 0.01 level with regard to all items in the preadolescent age group and with regard to all items except kinesthetic shock in the migraine group as a whole. There was thus a definite difference between the migraine group and the controls, a difference that might depend on impairment of ego function and on recurrent experience of pain.

Identification and modeling of process barriers

2018 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ramadas T. ◽  
Satish K.P.
Keyword(s):  
Lean Manufacturing ◽  
Rejection Rate ◽  
Measurement Model ◽  
Equation Modeling ◽  
Lean Implementation ◽  
Content Type ◽  
Employee Absenteeism ◽  
High Rejection Rate ◽  
Critical Process ◽  
High Rejection

Purpose The purpose of this study is to present factors associated with process barriers in implementing lean manufacturing within the small- and medium-sized enterprises (SMEs). Design/methodology/approach This study was conducted to identify the process barriers in implementing lean manufacturing in SMEs. Moreover, by a thorough and detailed analysis, process barriers of high rejection rate, employee absenteeism and frequent breakdown with 29 associated variables were identified as the most critical process barriers and were used to develop the questionnaire. Structural equation modeling was used to build the measurement model by drawing on samples of 128 SMEs in Kerala, a state in India. Later, the model was validated using statistical estimates. Data analysis helps to determine whether to accept or reject the hypothesis on the basis of the measurement model. Findings Several process barriers that prevent the successful implementation of lean manufacturing within SMEs are identified. These are lack of a training program, lack of periodical maintenance, low-quality standard materials from suppliers, bad vendor inspection, wear and tear of machines, communication gap between supervisors and workers, non-maintenance of a good employee–employer relationship, boredom on the job, overrunning machines beyond the capability, carelessness in work, not replacing worn damage parts periodically, ignoring warning signals of the machine classified as the most critical process barrier among the high rejection rate, employee absenteeism, frequent breakdown factors. Research limitations/implications First, the sample size of the study was relatively small (128). Second, data collection was restricted to one geographical area in India, i.e. Kerala, a state in India, giving rise to operational constraints. Third, the study was cross-sectional; a longitudinal study must be performed to reinforce the findings. Practical implications The present study has explored an unfocused area of lean implementation in SMEs. The results are expected to help researchers, academics and professionals in the domain of lean manufacturing. Social implications Governments of many countries around the world are helping and encouraging the implementation and understanding of the lean manufacturing system by providing financial assistance for training professionals and establishing professional associations. However, many industries have not been successful in lean implementation. This research aims to develop a strategy to tackle process barriers for successful lean implementation. Originality/value Very little research has been carried out in exploring process barriers in implementing lean manufacturing in SMEs. This paper will provide value to academics, researchers and practitioners of lean by providing insight into significant process barriers for lean implementation, especially in Indian industries.

scholarly journals Forward Osmosis as Concentration Process: Review of Opportunities and Challenges

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 284
Author(s):  
Gaetan Blandin ◽  
Federico Ferrari ◽  
Geoffroy Lesage ◽  
Pierre Le-Clech ◽  
Marc Héran ◽  
...  
Keyword(s):  
Concentration Factor ◽  
Water Reuse ◽  
Forward Osmosis ◽  
Value Added ◽  
Rejection Rate ◽  
Potential Candidate ◽  
Concentration Process ◽  
Brine Management ◽  
High Rejection Rate ◽  
High Rejection

In the past few years, osmotic membrane systems, such as forward osmosis (FO), have gained popularity as “soft” concentration processes. FO has unique properties by combining high rejection rate and low fouling propensity and can be operated without significant pressure or temperature gradient, and therefore can be considered as a potential candidate for a broad range of concentration applications where current technologies still suffer from critical limitations. This review extensively compiles and critically assesses recent considerations of FO as a concentration process for applications, including food and beverages, organics value added compounds, water reuse and nutrients recovery, treatment of waste streams and brine management. Specific requirements for the concentration process regarding the evaluation of concentration factor, modules and design and process operation, draw selection and fouling aspects are also described. Encouraging potential is demonstrated to concentrate streams more than 20-fold with high rejection rate of most compounds and preservation of added value products. For applications dealing with highly concentrated or complex streams, FO still features lower propensity to fouling compared to other membranes technologies along with good versatility and robustness. However, further assessments on lab and pilot scales are expected to better define the achievable concentration factor, rejection and effective concentration of valuable compounds and to clearly demonstrate process limitations (such as fouling or clogging) when reaching high concentration rate. Another important consideration is the draw solution selection and its recovery that should be in line with application needs (i.e., food compatible draw for food and beverage applications, high osmotic pressure for brine management, etc.) and be economically competitive.

ESTABLISHING AN OPTIMAL QUALITY PLANNING DECISION THROUGH DISCRETE EVENT SIMULATION: ANALYSIS CASE STUDY

2016 ◽  
Vol 78 (7) ◽  
Author(s):  
Nur Syazwani Abd Suki ◽  
Ong Hoay Yee ◽  
Shahrul Kamaruddin ◽  
Elmi Abu Bakar
Keyword(s):  
Discrete Event Simulation ◽  
Performance Measures ◽  
Discrete Event ◽  
Rejection Rate ◽  
Shop Floor ◽  
Quality Planning ◽  
Event Simulation ◽  
High Rejection Rate ◽  
High Rejection

Random in-process quality control (IPQC) is conducted in one of the departments in a circuit board manufacturing company, Company A, which produces high-mixed products, and results in complete failure of ensuring the quality of parts produced. Consequently, defects occur on the parts produced, leading to high rejection rate. This high rejection rate eventually results in high cost of non-value-added activities, which include rework of rejected parts. This paper introduces quality planning to ensure the quality of work-in-progress (WIP) parts in the production with discrete event simulation (DES) software. A series of experiments is conducted by using varying parameters, including flow patterns of parts in the shop floor and number of IPQC inspector, to assess the significance of these parameters on the performance measures relevant to quality perspective. Statistical analysis is conducted on the simulation results via ANOVA. Findings from this research prove that varying the parameters has a significant effect on the performance measures.

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