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2019

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First Observation Of The Directed Flow Of D0 And D0 ̄ In Au+ Au Collisions At Snn= 200 Gev, Ahmad Hamed Dec 2019

First Observation Of The Directed Flow Of D0 And D0 ̄ In Au+ Au Collisions At Snn= 200 Gev, Ahmad Hamed

Faculty Journal Articles

We report the first measurement of rapidity-odd directed flow (v1) for D0 and D0̄ mesons at midrapidity (|y|<0.8) in Au+Au collisions at sNN=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. In 10-80% Au+Au collisions, the slope of the v1 rapidity dependence (dv1/dy), averaged over D0 and D0̄ mesons, is -0.080±0.017(stat)±0.016(syst) for transverse momentum pT above 1.5 GeV/c. The absolute value of D0 meson dv1/dy is about 25 times larger than that for charged kaons, with 3.4σ significance. These data give a unique insight into the initial tilt of the produced matter, and offer constraints on the geometric and transport parameters of the hot QCD medium created in relativistic heavy-ion collisions.

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Effectivity Of Erythropoietin-Alpha Between Fixed- And Adjusted-Dose In Chronic Kidney Disease Patients With Anemia On Hemodialysis, Mida Purwiningtyas, Yulistiani Yulistiani, Budi Suprapti, Bayu Dharma Santi Dec 2019

Effectivity Of Erythropoietin-Alpha Between Fixed- And Adjusted-Dose In Chronic Kidney Disease Patients With Anemia On Hemodialysis, Mida Purwiningtyas, Yulistiani Yulistiani, Budi Suprapti, Bayu Dharma Santi

Folia Medica Indonesiana

Every year, there are 500.000 new cases and more than 250.000 deaths caused by cervical cancerworldwide. Cervical cancer patients faced physical and psychological problems several times that it activate stress mechanism such as hypothalamus-pituitary-adrenal (HPA) axis. These recurrent activations caused HPA axis disruption and adverse clinical effects. Several symptoms of endocrine stress response are the change of circadian cortisol rhythm. Cortisol is known as a stress hormone that involves an organism's response to stress and anxiety that influence the quality of life. This research aims to analyze the differences among serum cortisol level, anxiety, and quality of life in cervical …

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The Quality Of Work-Life And Relation To Organizational Excellence At King Khalid University Of The Faculty Members' Point Of View / Business School Case Study, Ahmed Al Yami, A Eman Haif Bin Wared Dec 2019

The Quality Of Work-Life And Relation To Organizational Excellence At King Khalid University Of The Faculty Members' Point Of View / Business School Case Study, Ahmed Al Yami, A Eman Haif Bin Wared

Journal of Economics and Administrative Sciences

This study aimed to identify the quality of the career path and its relation to organizational excellence at King Khalid University in the Faculty of Business from the point of view of the faculty members by identifying the dimensions quality of work-life including (participation of decision making, training and development opportunities, and the balance between personal and work life, and to identify the level of organizational excellence through dimensions ( Excellence of leadership, excellence of the strategy, and excellence of organizational culture). The descriptive approach was used. The questionnaire was a research tool. It consisted of (29) paragraphs, distributed to …

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Effectiveness Of Post-Acute Rehabilitation On Functional Outcome After Hip Fracture, Yen-Ju Wang, Pei-Hsin Lin, Li-Ning Peng, Mu-Jung Kao, Serena Y.C Lin, Kuan-Hua Huang, Yen-Fang Chen, Miao-Ru Liang Dec 2019

Effectiveness Of Post-Acute Rehabilitation On Functional Outcome After Hip Fracture, Yen-Ju Wang, Pei-Hsin Lin, Li-Ning Peng, Mu-Jung Kao, Serena Y.C Lin, Kuan-Hua Huang, Yen-Fang Chen, Miao-Ru Liang

Rehabilitation Practice and Science

Objective: We investigated the effectiveness of functional recovery after 2-week post-acute rehabilitation in elderly people with hip fractures. Design: We divided the patients (N = 129) into 2 groups: the post-acute care (PAC) group (N = 90) that received 2-week in-hospital rehabilitation and the control group (N =39) that were discharged immediately. Outcomes were measured according to the Barthel Index (BI) score. Results: The BI scores at 2 weeks, 3 months, and 6 months were higher in the PAC group than those in the control group, especially for transfer and mobility. Males, aged less than 80 years old, or who …

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Bpc 157 Promotes Skeletal Muscle Cells Migration In Association With Up-Regulation Of Paxillin And Vinculin Expression, Szu-Heng Wang, Li-Ping Lin, Miao-Sui Lin, Jong-Hwei S. Pang, Wen-Chung Tsai Dec 2019

Bpc 157 Promotes Skeletal Muscle Cells Migration In Association With Up-Regulation Of Paxillin And Vinculin Expression, Szu-Heng Wang, Li-Ping Lin, Miao-Sui Lin, Jong-Hwei S. Pang, Wen-Chung Tsai

Rehabilitation Practice and Science

BPC 157 was first isolated from human gastric juice. It is a stable 15-amino acid fragment (GEPPPGKPADDAGLV), and the healing-promoting effects of BPC 157 have been reported on muscle injury. The aim of this study was to investigate the effect and molecular mechanism of BPC 157 on migration of skeletal muscle cells. Skeletal muscle cells were isolated from the gastrocnemius muscle of Sprague-Dawley rats, and treated with BPC 157. The cell migration was evaluated by transwell filter migration assay. The spreading of cells was evaluated microscopically. The protein expressions of paxillin and vinculin (which were positive regulators of cell migration) …

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Serial Electromyographic Evaluations In Patients With Unilateral Vocal Fold Paralysis, Yu-Wei Hu, Tuan-Jen Fang, Ying-Hsun Chen, Szu-Heng Wang, Wei-Sen Chen, Shao-Chih Hsu, Yu-Cheng Pei Dec 2019

Serial Electromyographic Evaluations In Patients With Unilateral Vocal Fold Paralysis, Yu-Wei Hu, Tuan-Jen Fang, Ying-Hsun Chen, Szu-Heng Wang, Wei-Sen Chen, Shao-Chih Hsu, Yu-Cheng Pei

Rehabilitation Practice and Science

Background: Unilateral vocal fold paralysis causes incomplete closure of the glottis. Clinical manifestations include hoarseness and dysphagia, thus hindering the patients' quality of life. To characterize chronological laryngeal electromyographic changes, this prospective study evaluated laryngeal electromyography and voice at two time points in patients with unilateral vocal fold paralysis. Study design: A retrospective study. Methods: In this study, 12 patients with unilateral vocal fold paralysis who did not receive surgical treatment or injection therapy were recruited. Laryngeal electromyography was performed on the thyroarytenoid-lateral cricoarytenoid (TA-LCA) muscle complex and cricothyroid (CT) muscle, and quantitative analysis was conducted on the TA-LCA muscle …

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Risk Factors For Concussion And Head, Neck, And Facial Injuries In Amateur Mixed Martial Arts Athletes, Hsin-Chin Lin, Carl P. C. Chen, Tung-Yang Yu, Yu-Ann Wang, Szu Heng Wang, Yu-Min Chien Dec 2019

Risk Factors For Concussion And Head, Neck, And Facial Injuries In Amateur Mixed Martial Arts Athletes, Hsin-Chin Lin, Carl P. C. Chen, Tung-Yang Yu, Yu-Ann Wang, Szu Heng Wang, Yu-Min Chien

Rehabilitation Practice and Science

The popularity of mixed martial arts (MMA) has been on the rise globally since the year 2000 and Taiwan is no exception. Because MMA is a contact sport, it can cause sport-related injuries, especially concussion and head, neck, and facial injuries. This is the first study to analyse the risk of concussion and other head, facial, and neck injuries in amateur MMA competitions in Taiwan. Forty-eight competitors were enrolled in this study. The epidemiology of injuries was recorded and analysed using logistic regressions and odds ratios in STATA 14; data analysed included locations and incidence of concussion and head, neck, …

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Factors Influencing The Use Of Inpatient Rehabilitation Services Among Amputees In Acute Hospitals: An Observational Study, Ya-Ling Huang, Ming-Chung Yang, Chun-Chieh Wu, Tung-Chou Li Dec 2019

Factors Influencing The Use Of Inpatient Rehabilitation Services Among Amputees In Acute Hospitals: An Observational Study, Ya-Ling Huang, Ming-Chung Yang, Chun-Chieh Wu, Tung-Chou Li

Rehabilitation Practice and Science

Objective: To examine rates of inpatient rehabilitation (IR) use in a nationwide amputee and determine factors associated with receiving rehabilitation services during acute admission. Methods: This research is a retrospective observational study. We sampled data from a nationally representative sample of 1,000,000 enrollees of the single-payer government-based National Health Insurance (NHI) program in Taiwan from 1996 to 2013. Claims data for rehabilitation during index admission after amputation were analyzed, and factors associated with IR use were identified. Multivariable logistic regression was performed with adjustment for clustering to identify which factors were independently associated with acute IR referral. Results: Among the …

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A Focal Survey Of Medical Professionals' Conceptions Of Gastrostomy In Patients With Dysphagia After Stroke In Taiwan, Sheng-Hao Cheng, Yi-Ching Chen, Ming-Yen Hsiao, Tyng-Guey Wang Dec 2019

A Focal Survey Of Medical Professionals' Conceptions Of Gastrostomy In Patients With Dysphagia After Stroke In Taiwan, Sheng-Hao Cheng, Yi-Ching Chen, Ming-Yen Hsiao, Tyng-Guey Wang

Rehabilitation Practice and Science

Background and aims: People with dysphagia may require long-term tube feeding to maintain adequate nutrition. In Taiwan, nasogastric (NG) tubes are more commonly used than gastrostomy tubes. This practice is inconsistent with international treatment guidelines. Medical professionals' attitudes toward treatment may influence patients' decisions. Therefore, we designed a questionnaire to assess whether medical professionals' conceptions of gastrostomy are consistent with current international treatment principles. Methods: We used an online questionnaire hosted on ＂Google Forms＂ to collect medical professionals' conceptions of gastrostomy. Societies related to dysphagia distributed copies of the questionnaire to their members. The professionals included specialists (physiatrists, otolaryngologists, oral …

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Shoulder And Upper Extremities Function In Patients With Head And Neck Cancer After Selective Neck Dissection, Han-Chin Hsieh, Chau-Peng Leong, Yan-Yuh Lee, Chih-Yen Chien, Chia-Hsuan Lin, Yu-Chi Huang Dec 2019

Shoulder And Upper Extremities Function In Patients With Head And Neck Cancer After Selective Neck Dissection, Han-Chin Hsieh, Chau-Peng Leong, Yan-Yuh Lee, Chih-Yen Chien, Chia-Hsuan Lin, Yu-Chi Huang

Rehabilitation Practice and Science

Background: Shoulder dysfunction is common after nerve-sparing selective neck dissection (SND). We aimed to assess the upper extremity function and shoulder pain in patients with head and neck cancer (HNC) after SND. Methods: In this cross-sectional study, we enrolled 38 patients with HNCs after SND and evaluated shoulder active range of motion (ROM), muscle strength, pain, and the Disabilities of the Arm, Shoulder and Hand Score (DASH) questionnaire for upper extremity function on operative and non-operative sides. Results: Significant reductions in shoulder motions, muscle strength, and higher level of shoulder pain were observed on the operative side after SND. Worse …

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Effectiveness Of Therapeutic Exercise To Improve Arm And Breast Symptoms In The Post-Operative Breast Cancer Patients, Jui-Hsiang Sung, Chao-Chun Huang, Kai-Jie Yang, Kuan-Cheng Chen Dec 2019

Effectiveness Of Therapeutic Exercise To Improve Arm And Breast Symptoms In The Post-Operative Breast Cancer Patients, Jui-Hsiang Sung, Chao-Chun Huang, Kai-Jie Yang, Kuan-Cheng Chen

Rehabilitation Practice and Science

Background: Breast cancer is one of the most common cancers in women worldwide. Current options for breast cancer therapy include surgical excision, radiotherapy, and chemotherapy. Many studies have indicated that multifactorial exercise and complete decongestive therapy have positive effects on post-operative/post-radiotherapy lymphedema and shoulder dysfunction (i.e., range of motion). Quality of life after cancer therapy has been a great concern. Many cancer-specific evaluation tools, such as EORTC QLQ - BR23 for breast cancer, have been established in recent years to evaluate quality of life. Objectives: To confirm the effectiveness of therapeutic exercise and complete decongestive therapy on arm and breast …

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Determinants Of Stroke Inpatient Charge In Chronic Rehabilitation Wards Of A Community Hospital In Taiwan, Allen C.L. Hsu, Miao-Ming Chen, Chih-Kuang Chen Dec 2019

Determinants Of Stroke Inpatient Charge In Chronic Rehabilitation Wards Of A Community Hospital In Taiwan, Allen C.L. Hsu, Miao-Ming Chen, Chih-Kuang Chen

Rehabilitation Practice and Science

Stroke is a disease with severe consequences which impose a considerable socio-economic burden on patients and society. In developed countries, stroke patients alone generate about 3-4% of the direct costs within the healthcare system. The costs of rehabilitation and long-term care of disabled stroke survivors are expected to rise even further because of the increasing number of the aging population and declining stroke case-fatality rates. The aims of the paper are to evaluate the factors that may influence costs of stroke patients in chronic rehabilitation wards for better management of medical resources. This study was conducted at a local general …

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Identification And Evaluation Of Antibacterial Compounds From The Vibrio Sp. Associated With The Ascidian Pycnoclavella Diminuta, Abdurraafi’ Maududi Dermawan, Elin Julianti, Masteria Yunovilsa Putra Dec 2019

Identification And Evaluation Of Antibacterial Compounds From The Vibrio Sp. Associated With The Ascidian Pycnoclavella Diminuta, Abdurraafi’ Maududi Dermawan, Elin Julianti, Masteria Yunovilsa Putra

Pharmaceutical Sciences and Research

This study aims to obtain secondary metabolites that have antibacterial activity from bacteria endophytic of ascidian Pycnoclavella diminuta collected from the coast of Bitung, North Sulawesi, Indonesia. The research was started with screening antibacterial activity of six bacteria isolated from P. diminuta. The active bacteria were selected for identification using standard biological molecular method and further fermentation to produce secondary metabolites. The isolation of secondary metabolites was conducted by various chromatography method and then selected fraction was based on the antibacterial activity from bioautography results. The result showed that the active isolate by coding M2.Tnk.Bt 5.10-3.2 was identified as Vibrio …

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A Review On The Mechanical Properties For Thin Film And Block Structure Characterised By Using Nanoscratch Test, Xianfeng Wang, Ping Xu, R Han, Jun Ren, Longyuan Li, N Han, Feng Xing, Jihua Zhu Dec 2019

A Review On The Mechanical Properties For Thin Film And Block Structure Characterised By Using Nanoscratch Test, Xianfeng Wang, Ping Xu, R Han, Jun Ren, Longyuan Li, N Han, Feng Xing, Jihua Zhu

School of Engineering, Computing and Mathematics

AbstractThe nanoscratch test has been identified as one of the important tools for evaluating the mechanical and tribological properties of materials. This paper reviews the current researches on the nanoscratch test using to characterise the mechanical properties of three typical materials, including thin film, polymer composite and concrete, from the perspectives of the Berkovich indenter, parameter selection, mode selection, and analysis of resulting data. In addition, to provide a deep understanding on the test from different magnitude, a comparison between the microscratch test and nanoscratch test on the evaluation of tribological performance is also provided in this paper. The characterisation …

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Altitudinal Distribution And Monthly Occurrence Of Butterflies In The Kihansi Gorge Forest, Tanzania, With A Checklist Of Species, Devolent Mtui, Colin Congdon, Ivan Bampton, Parson Kalenga, Haule Leonard Dec 2019

Altitudinal Distribution And Monthly Occurrence Of Butterflies In The Kihansi Gorge Forest, Tanzania, With A Checklist Of Species, Devolent Mtui, Colin Congdon, Ivan Bampton, Parson Kalenga, Haule Leonard

Tanzania Journal of Science

The goal of this project was to establish a checklist of butterflies occurring in Kihansi gorge to serve as baseline for monitoring of gorge ecosystem health. The key questions were what and how many species of butterflies occur in the gorge with respect to time and space. The study was conducted between October 2005 and February 2007. Butterflies were recorded twice a week, along a walking trail, using malaise traps and sweep net. The traps were located at upper (> 750 – 1100 m), mid (> 580 – 750 m) and lower (300 – 580 m) gorge. A total of …

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Reintroduction Of The Kihansi Spray Toad Nectophrynoides Asperginis Back To Its Natural Habitat By Using Acclimatizing Cages, Charles A. Msuya, Nassoro Mohamed Dec 2019

Reintroduction Of The Kihansi Spray Toad Nectophrynoides Asperginis Back To Its Natural Habitat By Using Acclimatizing Cages, Charles A. Msuya, Nassoro Mohamed

Tanzania Journal of Science

The Kihansi Spray Toad (Nectophrynoides asperginis) is considered to be extinct in the wild. Captive breeding populations exist in Bronx and Toledo zoos in USA and in two captive breeding facilities in Tanzania. Efforts to reintroduce the species back to its natural habitat at Kihansi Gorge wetlands have become a long process. Both ex-situ and in-situ experiments have revealed promising outcomes but when the toads are freely (hard) released in the wetlands they disperse widely and detection becomes difficult.  Cages for acclimatising the toads before hard release have been constructed in two of the Kihansi Gorge spray wetlands. Factors such …

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Mammals Inventory Of The Kihansi River Gorge In Udzungwa Mountains, Tanzania, Dennis K. Ikanda, Samuel N. Mtoka, Mustafa Hassanali, Anna Mshanga Dec 2019

Mammals Inventory Of The Kihansi River Gorge In Udzungwa Mountains, Tanzania, Dennis K. Ikanda, Samuel N. Mtoka, Mustafa Hassanali, Anna Mshanga

Tanzania Journal of Science

The Kihansi gorge montane forest in Udzungwa Mountains forms part of the Eastern Arc Mountains (EAM) which contain some of the most biologically diverse and endemic montane ecosystems in all of Africa. The Kihansi river gorge was opened up for hydroelectric development in the late 1990s, attracting hundreds of farming communities whose activities lead to environmental degradation and hence presumed biodiversity loss in the montane forest which is not understood. Using camera traps, an inventory of mammals of the area was conducted for 24 consecutive days. About 14 mammal species were photo captured, indicating diverse assemblage of large and medium …

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Crop Pests, Control Measures And Potential Impacts In Kihansi Catchment Area, Beatrice Pallangyo, K. Mdily, C. Mkondo, A. Kibola Dec 2019

Crop Pests, Control Measures And Potential Impacts In Kihansi Catchment Area, Beatrice Pallangyo, K. Mdily, C. Mkondo, A. Kibola

Tanzania Journal of Science

A baseline survey which covered 349 households in Bomang’ombe and Masisiwe (Kilolo district), Kibengu and Mapanda (Mufindi district) and Chita and Chisano (Kilombero district) was conducted to identify major pests, control measures and potential impacts in Kihansi catchment area. Maize was the most predominant crop being cultivated by 55% of the total respondents in all the study districts. Pests and diseases were the major constraints to crop production, whereby cereal stem borers were the most serious pests being reported by 88.2% of respondents. Application of synthetic pesticides was the major pest control measure, being applied by 66% of the respondents. …

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Understorey Bird Communities 8 And 18 Years After River Diversion In Kihansi Gorge, Udzungwa Mountains In The Eastern Arc Mountains, Tanzania, Chacha Werema, Charles A. Msuya Dec 2019

Understorey Bird Communities 8 And 18 Years After River Diversion In Kihansi Gorge, Udzungwa Mountains In The Eastern Arc Mountains, Tanzania, Chacha Werema, Charles A. Msuya

Tanzania Journal of Science

On the most south-western slopes of the Udzungwa Mountains in Tanzania lies Kihansi River. The river was diverted underground in 2000 to run electric turbines for electricity generation. Using mist netting, pre-diversion (in 1998 and 1999) and short term post-diversion (in 2001) effects of the river diversion on understorey birds were undertaken before and year after river diversion, respectively. Intermediate and long-term effects of river diversion on understorey birds at the same transects are non-existent. In September 2008 and August and September 2018, using mist nets, birds were surveyed at the same transects  to assess whether or not there have …

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Applying Positive Language In Mindful Parenting: A Means Of Building Positive Character In Children, Amrina Rosyada, Agustina Ramadhianti Dec 2019

Applying Positive Language In Mindful Parenting: A Means Of Building Positive Character In Children, Amrina Rosyada, Agustina Ramadhianti

ASEAN Journal of Community Engagement

Positive language is a crucial communication tool, both within the family environment and in external circumstances. Previous research endeavors have evidenced that the inculcation of positive language by parents is effective in building positive character in their children. Thus, language is not merely a communication tool; it is also a means of personality development. However, this application cannot be realized if parents are unaware. Therefore, the community service activity proposed in this paper aims to broaden and strengthen mindful parenting, and to enhance the discernment of positive language in parents to help them build positive character in their children. To …

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Teaching Arabic In The Era Of Industrial Revolution 4.0 In Indonesia: Challenges And Opportunities, Azkia Muharom Albantani, Ahmad Madkur Dec 2019

Teaching Arabic In The Era Of Industrial Revolution 4.0 In Indonesia: Challenges And Opportunities, Azkia Muharom Albantani, Ahmad Madkur

ASEAN Journal of Community Engagement

Teaching Arabic as a foreign language (TAFL) in Indonesia has been interest of many scholars, but studies on TAFL in the context of industrial revolution (IR) 4.0 have been rarely conducted. This qualitative study was aimed at investigating the challenges and opportunities in accelerating the quality of Arabic language instruction in the IR 4.0 era. Qualitative data analysis consisting of four steps, namely, data collection, data reduction, data presentation, and data verification was applied to analyze the gathered data. According to the research results, the challenges are the following: Arabic language teachers’ limited adaptation to technology, students’ low motivation to …

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The Concept Of Green Rusunawa For The Urban Community In Indonesia, Sri Hapsari Wijayanti, Weny Savitri S. Pandia, Herman Yosep Sutarno Dec 2019

The Concept Of Green Rusunawa For The Urban Community In Indonesia, Sri Hapsari Wijayanti, Weny Savitri S. Pandia, Herman Yosep Sutarno

ASEAN Journal of Community Engagement

With the inevitability of population growth and urbanization, governments have initiated the development and spatial planning of smart and green cities. By conducting direct observation and focus group discussion (FGD) with management unit representatives and residents, this study identified three priority issues in Rusunawa Muara Baru, Pluit, North Jakarta: access to clean water, management of household waste, and the lack of a public area for social activities or interaction. This paper aims to solve these problems through the implementation of an integrated model of Green Rusunawa, especially in Towers 5, 6, and 7. The stages of this program include preparation, …

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Learning Assessment Training Based On Curriculum 2013 By Using Vocational High School E-Report In South Tangerang, Aulia Nursyifa, E. Nurzaman, Alinurdin Alinurdin Dec 2019

Learning Assessment Training Based On Curriculum 2013 By Using Vocational High School E-Report In South Tangerang, Aulia Nursyifa, E. Nurzaman, Alinurdin Alinurdin

ASEAN Journal of Community Engagement

Curriculum 2013 changes require teachers to be able to use technology the learning process until the stage of reporting learning outcomes, E-Report is one of the technologies used presenting learning outcomes. However, the problems today are that not all teachers can use the E-Report application. The purpose of this community service is to improve teacher’s ability to perform learning assessments based on the 2013 curriculum using the E-Report application. The method of community devotion activities is a method of instruction by providing training to teachers about E-Report application. Data retrieval is conducted using observations, tests, and questionnaires to participants. The …

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The Importance Of Maritime Education And Training Within The Secondary Education System In South Africa, Paulos Mxolisi Kuhlase Dec 2019

The Importance Of Maritime Education And Training Within The Secondary Education System In South Africa, Paulos Mxolisi Kuhlase

World Maritime University Dissertations

No abstract provided.

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Finite-Energy Spatiotemporally Localized Airy Wavepackets, Amr Mohamed Shaarawi Dec 2019

Finite-Energy Spatiotemporally Localized Airy Wavepackets, Amr Mohamed Shaarawi

Faculty Journal Articles

The time-diffraction technique introduced by Porras recently is motivated in this article in terms of the Lorentz invariance of the equation governing the narrow angular spectrum and narrowband temporal spectrum paraxial approximation and it is used to derive finite-energy spatiotemporally confined subluminal, luminal and superluminal Airy wave packets. In addition, a novel exact finite-energy luminal Airy splash mode-type solution to the scalar wave equation is derived using Bateman’s conformal transformation.

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Correlation Between Microstructural Defects And Photoelectrochemical Performance Of 1d Ti--Nb Composite Oxide Photoanodes For Solar Water Splitting, Nageh Khalaf Allam, Mahmoud Farag, Aya A. Saleh Dec 2019

Correlation Between Microstructural Defects And Photoelectrochemical Performance Of 1d Ti--Nb Composite Oxide Photoanodes For Solar Water Splitting, Nageh Khalaf Allam, Mahmoud Farag, Aya A. Saleh

Faculty Journal Articles

We report on the optimized fabrication of ultrathin wall nanotubes grown on Ti–Nb alloy via anodization in organic-based electrolytes. The nanotubes are vertically aligned with wall thicknesses of 5–8 nm, diameters of 180–200 nm, and lengths of 2–2.8 μm. Raman spectroscopy and glancing angle x-ray diffraction (GAXRD) measurements indicated the formation of composite oxides of anatase TiO2 and monoclinic Nb2O5. The composite oxides showed better stability at elevated temperatures up to 650 ᵒC and with much smaller induced microstrain compared to the TiO2 counterpart. X-ray photoelectron spectroscopy (XPS) analysis confirmed the composition of the fabricated nanotubes as a mixed TiO2–Nb2O5 …

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Longitudinal Double-Spin Asymmetry For Inclusive Jet And Dijet Production In P P Collisions At S= 510 Gev, Ahmad Hamed Dec 2019

Longitudinal Double-Spin Asymmetry For Inclusive Jet And Dijet Production In P P Collisions At S= 510 Gev, Ahmad Hamed

Faculty Journal Articles

We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy s=510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x≈0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at s=200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.

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Measurement Of D0 -Meson + Hadron Two-Dimensional Angular Correlations In Au+ Au Collisions At Snn =200 Gev, Ahmad Hamed Dec 2019

Measurement Of D0 -Meson + Hadron Two-Dimensional Angular Correlations In Au+ Au Collisions At Snn =200 Gev, Ahmad Hamed

Faculty Journal Articles

Open heavy-flavor hadrons provide unique probes of the medium produced in ultrarelativistic heavy-ion collisions. Due to their increased mass relative to light-flavor hadrons, long lifetime, and early production in hard-scattering interactions, they provide access to the full evolution of the partonic medium formed in heavy-ion collisions. This paper reports two-dimensional (2D) angular correlations between neutral D mesons and unidentified charged particles produced in minimum-bias Au+Au collisions at sNN=200GeV. D0 and D¯0 mesons are reconstructed via their weak decay to Kπ± using the Heavy Flavor Tracker in the Solenoidal Tracker at RHIC experiment. Correlations on relative pseudorapidity and azimuth (Δη,Δφ) are …

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Design Considerations Of Highly Efficient D-Shaped Plasmonic Biosensor, Mohamed Swillam Dec 2019

Design Considerations Of Highly Efficient D-Shaped Plasmonic Biosensor, Mohamed Swillam

Faculty Journal Articles

Design considerations of photonic crystal fiber (PCF) surface plasmon biosensor with high sensitivity to monitor glucose concentration is reported and studied. Based on a well-known large mode area (LMA) single mode PCF, two different configurations have been studied to investigate the impact of the etching process on the biosensor sensitivity. Furthermore, the possibility of infiltrating one hole by a plasmonic material to increases the biosensor sensitivity is studied. A full vectorial finite element method (FVFEM) is used to carry out the analysis of the reported biosensor. In addition, the geometrical parameters of the suggested biosensors have been optimized to obtain …

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Eco-Friendly, One-Step Synthesis Of Cobalt Sulfide-Decorated Functionalized Graphene For High-Performance Supercapacitors, Dalia M. El-Gendy, Israa M. Afifi, Nageh Khalaf Allam Dec 2019

Eco-Friendly, One-Step Synthesis Of Cobalt Sulfide-Decorated Functionalized Graphene For High-Performance Supercapacitors, Dalia M. El-Gendy, Israa M. Afifi, Nageh Khalaf Allam

Faculty Journal Articles

A simple approach is demonstrated to prepare functionalized spongy graphene/cobalt sulfide (FG-CoS)nanocomposites as interconnected, porous 3-dimensional (3D)network crinkly sheets. Such crinkly sheets contain the reduced spongy graphene oxide (SGO)sheets and the intercalated CoS nanoparticles within the spongy graphene. The fabricated FG-CoS composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and Raman spectroscopy. The synthesized materials were tested as supercapacitor materials in 3 M KOH using cyclic voltammetry (CV)at different potential scan rates, and galvanostatic charge/discharge tests at different current densities. The FG-CoS electrodes showed a maximum specific capacitance of 1072 F/g at a …

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