http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Vaisman-Gray Manifold of Pointwise Holomorphic Sectional Conharmonic Tensor
Abood, Habeeb Mtashar,Abdulameer, Yasir Ahmed Department of Mathematics 2018 Kyungpook mathematical journal Vol.58 No.4
The purpose of the present paper is to discuss the geometrical properties of the Vaisman-Gray manifold (VG-manifold) of a pointwise holomorphic sectional conharmonic tensor (PHT-tensor). Furthermore, the necessary and sufficient conditions required for the VG-manifold to admit such a PHT-tensor have been determined. In particular, under certain conditions, we have established that the aforementioned manifold was an Einstein manifold.
Gowri Sivaramakrishnan,Fatema AbdulAmeer,Fatema Faisal,Zainab Mansoor,Sawsan Hasan,Shagra Ebrahim,Leena AlSalihi,Muneera Alsobaiei 대한의료정보학회 2023 Healthcare Informatics Research Vol.29 No.1
Objectives: Healthcare-related information sharing via social media is on the rise following the coronavirus disease 2019(COVID-19) pandemic. Dental practices primarily use social media to search, share, and communicate health-related information. Considering the increasing trend of using social media, the primary aim of the present study was to identify theuse of social media by dentists and laypeople to post and view dentistry-related content in Bahrain. Methods: This questionnaire-based cross-sectional study included adult participants and dentists. A pretested validated questionnaire was administered. The chi-square test for association was used to assess the association between categorical outcomes. A p-value of ≤ 0.05was considered statistically significant. Results: In total, 249 adult participants and 53 dentists were included. A substantialmajority (83.5%) of the participants reported that they always used social media to view dentistry-related content, and 69.8%of the dentists felt that patients who use social media have better oral health awareness. A longer duration of social mediausage showed significant associations with particularly viewing dentistry-related content (p = 0.008) and contacting dentistsdirectly through social media for consultation (p = 0.055). Conclusions: An extremely high percentage of the younger populationin Bahrain is using various social media to discuss dentistry. This engagement should be wisely managed to promotedentistry-related information sharing, which can lead to increased awareness related to overall dental health. There is a definiteneed to enforce certain standard operating procedures in every country that will prevent the misuse of this technologicaladvancement.
Experimental and Numerical Study to Prepare Hydroxyapatite Powder from Fish Bones
Alya’a Abdulkadhim,Nihad Abdulameer 한국전기전자재료학회 2021 Transactions on Electrical and Electronic Material Vol.22 No.4
Hydroxyapatite powder (HAP) was prepared from fish bones thermally calcined at 750°C, then grind and sift, where a powder very similar in its characteristics was obtained to HAP powder, which is the main component of bones and teeth in the vivo. X-ray diffraction (XRD) test showed the crystal structure for the result powder, where it has proven to be very compatible with HAP powder, Fourier transform infrared (FT-IR) spectrometer test also showed that the components of the resulted powder from fi sh bones after thermal calcination, are the same as those in the composition of the original HAP powder. The particle size of the resulted powder was apparently, it is laying between 0.657 and 19.81 μm with a mean size of 3.259 μm. In addition, the prepared powder was studied numerically by drawing and studying some properties for the result compound by a Chem3D program.
Polu Anji Reddy,Kareem Aseel Abdulameer,Kim Kwangmin,Kim Dongkyu,Venkanna Mekala,Rasheed Hussein Kh.,Kumar Kanapuram Uday 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.12
The solution-cast method was used to prepare new solid polymer electrolytes (SPEs) that conduct potassium ions and are based on polyethylene glycol (PEG) complexed with potassium nitrate (KNO3). This polymer electrolyte system was characterized using different experimental techniques, such as X-ray diffraction (XRD), differential scanning calorimetry (DSC), composition vs. conductivity, temperature vs. conductivity, frequency-dependent conductivity, and dielectric measurements. The degree of crystallinity decreased with increasing salt concentration, according to the X-ray diffraction and DSC patterns of PEG with KNO3 salt. For PEG: KNO3 (80 : 20) composition, an optimum conductivity of 8.24× KT−6 S/cm was recorded at 30 °C. Compared with pure PEG, the optimum conducting composition (OCC) conductivity increased by two orders of magnitude. The temperature range of 303 to 333 K was used for the temperature-dependent conductivity experiments. The findings demonstrate that the conductivity obeys the Arrhenius rule and increases as the temperature rises. A dc plateau and a dispersive zone were observed in the conductance spectrum, which also follows Jonscher’s power law. It was investigated how temperature and frequency affect the dielectric permittivity. An electrochemical cell with the configuration K/(80PEG : 20KNO3)/(I2+C+electrolyte) was constructed using an 80 : 20 electrolyte system, and its discharge properties were investigated. The cell’s open circuit voltage was measured at 2.48 V.
Multi-objective Mathematical Modeling for Scheduling Machines in Parallel with Batch Processors
Evy Segarawati Ampry,Aan Komariah,Dedy Achmad Kurniady,Muhammad Rafiq,Asep Priatna,Muneam Hussein Ali,Haydar Abdulameer Marhoon,Lakshmi Thangavelu,Purnima Chaudhary 대한산업공학회 2022 Industrial Engineeering & Management Systems Vol.21 No.2
In this paper, the problem of scheduling the production of unrelated parallel machines to simultaneously minimize the goals of production time span, early and late fines, and the cost of purchasing machines is investigated, and a two-objective mathematical model is considered considering clearance and preparation times and limit capacity. Due to faster and cheaper operations with batch processors and increasing the efficiency of operating systems, all machines are batch processors. Initially, the model is coded and executed using the exact method in GAMS software. Due to the hard-NP nature and complex nature of the problem, a multi-objective meta-heuristic algorithm based on the coordination search method is proposed and designed. Then Taguchi method is used to find the best level for the algorithm parameters, and two examples of problems in different dimensions of tasks and machines are presented and solved by this proposed algorithm. The results of the calculations show the efficiency of this algorithm to generate more solutions at a much lower solution time.
Clinical and Molecular Detection of Fowl Pox in Domestic Pigeons in Basrah Southern of Iraq
Isam Azeez Khaleefah,Hassan M. Al-Tameemi,Qayssar Ali Kraidi,Harith Abdulla Najem,Jihad Abdulameer Ahmed,Haider Rasheed Alrafas 대한수의학회 2024 大韓獸醫學會誌 Vol.64 No.1
Bird species, particularly poultry and other bird types, including domestic pigeons, are susceptible to fowl pox, a contagious viral disease. The main goal of this study was to validate clinical avipoxvirus diagnoses using molecular analytical methods. The essential components of the investigation were the clinical signs, visible abnormalities, histological changes, and polymerase chain reaction analysis. Twenty out of 120 pigeons had clinical symptoms, which included yellowish crust or nodules near the feet, eyes, and beak. An erosive epidermal lesion and an epidermal acanthotic papular lesion with basal vacuolation were maculopapular evidence associated with significant epidermal hyperkeratosis, as confirmed by histological analysis. In addition, the results showed keratinocyte necrosis beneath the hyperkeratotic epidermal layer, together with superficial and deep dermal perivascular lymphocytic infiltration. In addition, the P4b core protein gene underwent phylogenetic analysis. The sequence analysis results indicated a high degree of similarity across the local strains, with just minor variations observed. Five sample sequences were selected and submitted to the NCBI database. These sequences were identified as OR187728, OR187729, OR187730, OR187731, and OR187732. All the various strains in this research may be classified under clade A of the chicken pox virus phylogenetic classification. This study presents the first description and characterization of pox virus infections in domestic pigeons inside the Basrah governorate.