bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical optimization for aerodynamic noises of rear view mirrors of vehicles based on rectangular cavity structures
Authors: Zhu Jing Jian , Liu Guo Wen 
Published: March 2018

The rectangular cavity structure was applied to edges of the rear view mirror, numerical computation was conducted for aerodynamic noises of the rear view mirror, and the results of optimized structure were compared with those of the original structure to verify optimized effects. Wind tunnel test was then conducted on the rear view mirror to verify correctness of the computational model. Sound pressure levels of each observation point between experimental test and numerical simulation were basically consistent, where only parts of the peak frequency points were different. The computational accuracy was very high. Two large-size vortexes were in this region behind the common rear view mirror. Vortexes above the rear part of the rear view mirror rotated anticlockwise, while vortexes under it rotated clockwise. There were two vortexes in the region behind the optimized rear view mirror, but the energy intensity of this vortex near the side window panel was very weak. Pressures on the front part of the optimized rear view mirror were also smaller than those of the original structure. In addition, it could be found that radiation noise distribution of the rear view mirror on the lateral window presented symmetry. When lateral window effects were considered, the aerodynamic noise was more than results without considering the lateral window effects. Total noises of each observation point without considering the lateral window effects were 56.7 dB, 59.2 dB, 58.6 dB, 58.9 dB, 62.3 dB and 63.1 dB, respectively. Total noises at each observation point with consideration of the lateral window effects were 65.3 dB, 66.5 dB, 68.7 dB, 69.2 dB, 70.1 dB and 70.8 dB, respectively. Therefore, when aerodynamic noises of the rear view mirror were computed, impacts of lateral window effects must be considered, otherwise the computation would be seriously deviated from actual situations. The frequency corresponding to maximum peaks of the aerodynamic noise after optimization approached the self-oscillation frequency of the rectangular cavity. The result indicates that aerodynamic noises in the rectangular cavity were fluid self-oscillation caused by the cavity structure. In addition, within the analyzed frequency band, the aerodynamic noises of the optimized rear view mirror were smaller than those of the original structure. The maximum decrease rate of total noises of the optimized rear view mirror was 15.62 %, and minimum decrease rate was 8.90 %. Optimized effects were very significant, especially in the low frequency bands.
Numerical simulation on the impact of the bionic structure on aerodynamic noises of sidewindow regions in vehicles
Authors: Liu Yang Yang , Li Yong Qiang , Ding Zheng Yin 
Published: March 2018

The paper adopted a bionic hemispherical convex structure in the A pillar-rear view mirror regions according to actual requirements. Furthermore, impacts of the bionic structure on aerodynamic characteristics and noises in the region were studied. Friction resistance of airflows was greatly reduced, fluctuations and pulsation pressures of flow fields were also reduced, and characteristics of flow fields and sound fields were improved. The computational results were finally verified by the experimental test. Firstly, the aerodynamic lift force coefficient and drag force coefficient of the bionic model were computed, and they were obviously lower than those of the original model. The adhesive force between tires and ground during vehicle running was increased, and the danger degree of “waving” of high-speed vehicle running was weakened. In this way, stability of vehicle running could be improved. Secondly, flow fields of the bionic model were computed. Compared with the original model, an obvious vortex was behind the original model, while no vortexes were behind the bionic model. Therefore, convex structures of the bionic model had obvious impacts on flow fields behind the rear view mirror. Airflow separation situations were obvious improved at wheels, windshield and rear side windows of the bionic model. Due to blocking of convex structures of the A pillar and rear view mirror in the bionic model, airflows was hindered and obvious dragging phenomena were formed. Therefore, flow fields in the side window regions could be improved greatly. In addition, the flow field scope under the rear view mirror in the bionic model was also decreased. Ringed vortex structures appeared behind the rear view mirror in the bionic model. The ringed vortex structures were closely interlaced and then extended together backwards. Vortexes behind the rear view mirror in the original model were chaotic, where most of them were attached on the surface of side windows. In the original model, turbulent flows with certain strength were on the right upper corner of the side window region. In the bionic model, no turbulent flows were in the same regions. This result indicated that through using the bionic convex structures, airflows flowing through side windows could be combed and could move backwards towards upper and lower edges of the side windows. It could be predicted that pulsation pressures on the side window surface would surely decrease. Therefore, aerodynamic noises caused by pulsation pressures in side window regions would also be improved correspondingly. Especially in regions behind A pillar-rear view mirrors, the maximum noise reduction amplitude reached about 20 dB.
A more accurate dynamic model for dual-side excitation large vibrating screens
Authors: Peng Liping , Fang Runxin , Feng Huihui , Zhang Lei , Ma Wenda , He Xiaodi 
Published: March 2018

Compared with a traditional unilateral-driven large vibrating screen, the proposed dual-side excitation large vibrating screen (DELVS) has a simpler screen structure and less vibration mass, which might improve its reliability. A DELVS with metal cylindrical coiled springs is theoretically and experimentally studied in this paper. With the rotation considered, a fundamental three-degree-of-freedom (3-DOF) dynamic model for DELVS is established firstly. Then an elastic compression bar model method (ECBM) is proposed for transverse stiffness determination of a metal cylindrical coiled spring and applied into the numerical simulation of DELVS. Finally, an experimental test on a DELVS of 4.25 m×6.00 m is conducted. It is seen that numerical simulation with the proposed ECBM is more closely related to the experimental data, hence the accuracy of the proposed dynamic model of DELVS is enhanced. The conclusions may provide guidance on a design of a high-performance large vibrating screen.
Isolation and identification of fungal assemblages in the necrotic spots of Bambusa pallida (L.) Voss
Authors: Debnath Sanjit , Karmakar Pintu , Bhattacharjee Sukla , Majumdar Koushik , Das Panna , Saha Ajay Krishna 
Published: March 2018

Bamboos are the most important plant due to their different uses and good source of income for upliftment of rural economy. Different parts of bamboos are damaged by many harmful bacteria, fungi and other organisms causing huge loss of economy. Diseased leaves of Bambusa pallida were used for isolation of fungal assemblages in symptom sites. A total of 7 fungi were isolated from the cultured medium; these were Lasiodiplodia theobromae, Drechslera rostrata, Curvularia lunata, Fusarium redolens, Sterile sp1, Sterile sp2, and Sterile sp3. Isolated L. theobromae, D. rostrata, C. lunata, F. redolens may be the causal fungi for necrotic spots disease in B. pallida. Colonization rate and isolation rate (%) were observed highest in L. theobromae, C. lunata F. redolens and Sterile sp2. The present finding will be helpful for knowing the causes of damage and relation with leaf spot disease. Further studies needed to be undertaken for finding the mode of colonization to causes diseases.
The morphological traits variation and inter relationships of understorey species of Sal (Shorea robusta) forest of north-eastern Uttar Pradesh, India.
Authors: Rai Satish Kumar , Shukla Ravindra P. , Pandey Sanjay Kumar 
Published: March 2018

Measurements of plant traits are required for evaluating community structure and its ecological responses to varying environmental conditions. The grouping on the basis of functional traits of plants has strong predictive power of important ecosystem responses to environmental perturbation. The morphological traits and their interrelationship among associated species have been analyzed to understand the quantitative variation within regional sal dominated forests. Data for five morphometric traits viz., plant height, leaf length, leaf width, flower size and fruit size, were observed for 193 woody (tree, shrub and liana) species belonging to 56 families within understorey of sal forest. Forty-one families were polytypic in nature. One-way ANOVA was used to detect how variation among all the traits was distributed among habit groups. A significant positive relationship was noticed between plant height and each of the leaf length, leaf width and fruit size. Of the different morphometric traits observed only plant height and fruit size showed wider variation among three life–form categories. Overall, our results suggest that measurement of plant morphometric characters are the major drivers of understory sal associates of the region. Hence, the morphological traits of sal associates should be carefully considered in framing the management and conservation strategy of regional sal forests.
HPLC identification of bio active flavonoids in methanolic and aqueous leaf extracts of Schrebera swietenioides Lin.,
Authors: V. Anuradha Devi , I. Veera Kishore , R. Ragha Latha , Mallikarjuna Kokkanti 
Published: March 2018

Natural products continue to provide unique structural diversity in comparison to standard combinatorial chemistry, which presents opportunities for discovering mainly novel low molecular weight lead compounds. Schrebera swietenioides belonging to family Oleaceae is an important medicinal plant used in the treatment of leprosy, diabetes and hepatic disorders by ethnic people. Chromatographic methods like TLC and HPLC were used for the separation and identification of flavonoids present in methanolic and aqueous leaf extract was studied. The chromatographic methods available for the separation of flavonoids in TLC and HPLC were adopted for the study. Three compounds were identified in TLC study in methanolic and aqueous leaf extracts. In HPLC analysis, peaks corresponding to flavonoids were obtained and were identified by comparing with literature and confirm that methanolic extract contains Rutin, Quercetin and Myricetin where as in aqueous extract Rutin and Quercetin were observed. The anti diabetic activity of isolated compounds was determined by literature and confirms that compounds were found to having potent anti diabetic activity. This proves that the anti-diabetic activity of S. swietenioides was due to the presence of these bio-active compounds
Algebraic Verification Algorithm
Authors: Abduldaim Areej M 
Published: March 2018

Authentication over insecure public networks or with untrusted servers raises more concerns in privacy and security.Modern algebra is one of the significantfields of mathematics. It is a combination of techniques used for a variety of applications including the process of the manipulation of the mathematical categories. In addition,modern algebra deals in depth with the study of abstractions such as groups, rings and fields,the main objective of this article is to provide a novel algebraic verification protocol using ring theory. The protocol is blind, meaning that it detects only the identity, and no additional information will be known anything about the prover (the biometric) to the authenticating server or vice-versa. More officially a blind authentication scheme is a cryptographic protocol that comprises of two parties, a user (the prover) that wants to achieve having signs on her messages, and a signer (the verifier) that is in ownership of his secret signing key. In this paper, we employ the algebraic structure called central Armendariz rings to design a neoteric algorithm for zero knowledge proof. The proposed protocol is established and illustrated through numerical example, and its soundness and completeness are proved.This method gave two important properties for the central Armendariz zero knowledge protocol compared with other known protocols.
Transient effectiveness of dapsone for skin lesions in a patient with discoid lupus erythematosus
Authors: Mikita Naoya , Furukawa Fukumi 
Published: March 2018

Dapsone is a synthetic sulfone preparation and is second-line treatment for cutaneous lupus erythematosus (CLE) including discoid LE (DLE). This report describes a patient with DLE, which was improved by dapsone quickly but the recurrence was noted. Oral administration of prednisolone (5 mg / day) was required but the complete healing was very difficult. In this report, we will discuss the effectiveness and limitation of dapsone for patients with DLE and the mechanisms of action.
Occupational exposure to blood and bodily fluids among healthcare workers in Serbian general hospitals
Authors: Mandić Bojana , Mandić-Rajčević Stefan , Marković-Denić Ljiljana , Bulat Petar 
Published: March 2018

Abstract
The risk of occupational bloodborne infections (HBV, HCV, and HIV) among healthcare workers remains a serious issue in developing countries. The aim of this study was to estimate occupational exposure to bloodborne infections among general hospital workers in Serbia. This cross-sectional study was conducted in the spring of 2013 and included 5,247 healthcare workers from 17 general hospitals. The questionnaire was anonymous, self-completed, and included sociodemographic information with details of blood and bodily fluid exposure over the career and in the previous year (2012). Significant predictors of sharps injuries were determined with multiple logistic regressions. The distribution of accidents in 2012 was equal between the genders (39 %), but in entire career it was more prevalent in women (67 %). The most vulnerable group were nurses. Most medical doctors, nurses, and laboratory technicians reported stabs or skin contact with patients’ blood/other bodily fluid/tissue as their last accident. Healthcare workers from the north/west part of the country reported a significantly lower number of accidents over the entire career than the rest of the country (p<0.001). The south of Serbia stood out as the most accident-prone in 2012 (p=0.042).
The efficiency of lactic acid bacteria against pathogenic fungi and mycotoxins
Authors: Perczak Adam , Goliński Piotr , Bryła Marcin , Waśkiewicz Agnieszka 
Published: March 2018

Abstract
Mycotoxins are produced by some fungal species of the genera Aspergillus, Penicillium, and Fusarium and are common contaminants of a wide range of food commodities. Numerous strategies are used to minimise fungal growth and mycotoxin contamination throughout the food chain. This review addresses the use of lactic acid bacteria, which can inhibit fungal growth and participate in mycotoxin degradation and/or removal from contaminated food. Being beneficial for human and animal health, lactic acid bacteria have established themselves as an excellent solution to the problem of mycotoxin contamination, yet in practice their application in removing mycotoxins remains a challenge to be addressed by future research.
Canned sea fish marketed in Serbia: their zinc, copper, and iron levels and contribution to the dietary intake
Authors: Popović Aleksandar R. , Relić Dubravka J. , Vranić Danijela V. , Babić-Milijašević Jelena A. , Pezo Lato L. , Đinović-Stojanović Jasna M. 
Published: March 2018

Abstract
The aim of this study was to determine the levels of Zn, Cu, and Fe in three canned fish species marketed Serbia to see if they meet recommended daily intake requirements or exceed safety limits. We collected a total of 207 samples of canned tuna, sardine, and mackerel, in oil or tomato sauce and analysed them with inductively coupled plasma mass spectrometry (ICP-MS) after acid digestion. The highest levels were obtained for Zn (15.1 mg kg-1) and Cu (1.37 mg kg-1) in sardine in oil and tomato sauce, respectively, and for Fe (18.98 mg kg-1) in mackerel in tomato sauce. Our results keep within the ranges reported by several national food databases and available literature data, with a few exceptions. Our findings also single out canned sardines as the richest source of the three essential elements combined. The estimated daily intake (EDI) of the three essential elements, however, was subpar, and ranged between 0.14 % and 0.72 % of the recommended dietary allowance (RDA) for Zn, Cu, and Fe.
Discrepancies in the evaluation of incapacity for work in a patient with epidermolysis bullosa acquisita between public pension fund and occupational medicine expert raise the issue of competencies
Authors: Lalić Hrvoje 
Published: March 2018

Abstrat
A 50-year-old female patient suffering from a severe form of epidermolysis bullosa acquisita (EBA) took legal action against the Croatian Pension Insurance Institute (CPII) in an attempt to overturn their assessment that she was no longer capable of working as a seamstress but still capable of doing administrative jobs. Her claim was that she was not capable of doing any job at all. She was first diagnosed EBA in 2000, and the disease progressed slowly with intermittent remissions. In 2012, skin erosions appeared on her feet, followed by the loss of all toenails and lesions and infiltrations on the tongue and oral mucosa. Her whole body was covered in oozing wounds, she was in pain, and parts of her skin would stick to fabric while changing clothes or bandages. The most recent findings showed oesophageal stricture. She can consume only liquid food and is on the waiting list for receiving a feeding tube. The occupational health expert witness confirmed that the patient was generally incapable of work and was fighting her life. The judge and CPII lawyers fully accepted this report and the earlier assessment was overturned. To avoid incompetent assessments of working (in)capacity in the future, CPII and similar institutions should engage occupational medicine specialists to work in their assessment teams.
Antimycobacterial potential of the juniper berry essential oil in tap water
Authors: Peruč Dolores , Gobin Ivana , Abram Maja , Broznić Dalibor , Svalina Tomislav , Štifter Sanja , Staver Mladenka Malenica , Tićac Brigita 
Published: March 2018

Abstract
Mycobacterium avium complex-related diseases are often associated with poorly maintained hot water systems. This calls for the development of new control strategies. The aim of this study was to investigate the activity of essential oils (EOs) from the Mediterranean plants, common juniper, immortelle, sage, lavandin, laurel, and white cedar against Mycobacterium avium ssp. avium, Mycobacterium intracellulare, and Mycobacterium gordonae in culturing broth and freshwater as their most common habitat. To do that, we developed a new method of water microdilution to determine their minimal effective concentrations (MEC). The most active EO was the one from the common juniper with the MEC of 1.6 mg mL-1. Gas chromatography / mass spectrometry the juniper EO identified monoterpenes (70.54 %) and sesquiterpenes (25.9 %) as dominant component groups. The main monoterpene hydrocarbons were α-pinene, sabinene, and β-pinene. The juniper EO significantly reduced the cell viability of M. intracellulare and M. gordonae at MEC, and of M. avium at 2xMEC. Microscopic analysis confirmed its inhibitory effect by revealing significant morphological changes in the cell membrane and cytoplasm of all three bacteria. The mode of action of the juniper EO on the cell membrane was confirmed by a marked leakage of intracellular material. Juniper EO has a great practical potential as a complementary or alternative water disinfectant in hot water systems such as baths, swimming pools, spa pools, hot tubs, or even foot baths/whirlpools.
The Intelligence Process and the Information Management
Authors: Vilasi Antonella Colonna 
Published: March 2018

Abstract
The Intelligence cycle is a procedure framework for the development of mission-focused Intelligence support. It is not an end in itself, nor should it be viewed as a rigid set of procedures that must be carried out in an identical manner on all occasions. The commander and the Intelligence officer must consider each IR (Intelligence requirement) individually and apply the Intelligence cycle in a manner that develops the required Intelligence in the most effective way (U.S. MARINE CORPS, 2007).
Corrective Feedback in Writing Essay in the L2 Classrooms
Authors: Xhama Leandro 
Published: March 2018

Abstract
Learning a foreign language is a complex and satisfying activity which encompasses a variety of skills used and learnt. It involves a sum of tools being used by the teacher to help and motivate students to study and remember and later use this knowledge to improve their performance in either writing or speaking English. My study has tackled one of the elements used by the teachers to motivate students and help their writing skills get better and last longer. In this observation of corrective feedback i have studied and questioned opinions of both students and teachers with regard to this process. The data was gathered by means of questionnaires and face to face interviews with students and teachers. I have addressed two main issues: First, what is the effectiveness of corrective feedback in learning writing in English and second how long do the skills learnt by corrective learning last.
Impact of Artisanal Gold Mining on Human Health and the Environment in the Batouri Gold District, East Cameroon
Authors: Ralph Obase , Gilles Ngoran , Fon Nde , Luma Henry , Greg Ngwane 
Published: March 2018

Abstract
There is no Occupational Health and Safety (OHS) system for the mining sector in Cameroon, and miners are exposed to numerous health and safety risks inherent from Artisanal Gold Mining (AGM) activity. Also very few studies have addressed the health problems in AGM in Cameroon. This study seeks to create an awareness of the health and environmental issues surrounding the mining sector in Cameroon so as to foster its development. It was a cross-sectional, observational, and communitybased study involving 273 respondents from three different communities. Questionnaires and interviews were used to collect data. OHS risk assessment was conducted through direct observation and inspection of five different workplaces. Blood samples were collected and analyzed for the presence of mercury and lead. Gold miners in Batouri are exposed to the risk of physical injuries, respiratory conditions, diarrheal conditions, psychotic disorders, dermatophyte infections, helminthic infestations, malaria and musculoskeletal problems. The most common health problems among miners are musculoskeletal disorders (35.6%), malaria (26.4%) and hernias (14.9%), while malaria (18.7%) and musculoskeletal disorders (15.4%) are common among stakeholders. The mean blood mercury and lead levels among miners is 2.27 ± 8.85 μg/L and 12.73 ± 32.73 μg/L respectively, and 9.1% of them are chronically intoxicated with mercury, reporting ≥ 4 symptoms possibly related to mercury intoxication. The major environmental problems are deforestation, land degradation, water pollution, air pollution and water-logged pits. AGM in Batouri, therefore, has a negative impact on human health and environmental sustainability.