Structural, Electronic and Optical Characteristics of HgSiX2 (X=P, As) Chalcopyrite Materials: A DFT-Based Computer Simulation

Khalid Shah,Khenata Rabah,Ma Yue,Sun Xiaoliang,Gao Meng,Wu Haicheng,Lu Guiwu,Yang Zhenqing 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.77 No.1

In the present work, we determined the structural, electronic and optical properties of HgSiX2 (X = P, As) chalcopyrite materials by using the density functional theory (DFT). Our calculated results showed alignment with the data drawn from other experimental and theoretical studies. Therefore including the lattice parameters, bulk moduli, band gaps, the total and partial densities of states and the optical properties. The computed band structures and density of states (DOS) disclosed that HgSiP2 and HgSiAs2 are semiconductors materials with energy gaps equal to 0.931 eV and 0.425 eV, respectively. Our findings displace that the Si-3p, P-3p and As-4p atomic orbitals contribute to the density of states. Moreover, a comprehensive analysis of the electronic and the optical properties such as the reflectivity, absorption spectra, and dielectric functions revealed that the HgSiP2 and the HgSiAs2 materials may be beneficial in optoelectronic applications. We hope that the designs and preparations of the HgSiP2 and the HgSiAs2 materials will lead to give new advance strategies and gateways for the explorations of highly efficient optoelectronic devices.

Comparison of immediate complete denture, tooth and implant-supported overdenture on vertical dimension and muscle activity

Farhan Khalid Shah,Ashraf Gebreel,Ali hamed Elshokouki,Ahmed Ali Habib,Amit Porwal 대한치과보철학회 2012 The Journal of Advanced Prosthodontics Vol.4 No.2

PURPOSE To compare the changes in the occlusal vertical dimension, activity of masseter muscles and biting force after insertion of immediate denture constructed with conventional, tooth-supported and Implant-supported immediate mandibular complete denture. MATERIALS AND METHODS Patients were selected and treatment was carried out with all the three different concepts i.e, immediate denture constructed with conventional (Group A), tooth-supported (Group B) and Implant-supported (Group C) immediate mandibular complete dentures. Parameters of evaluation and comparison were occlusal vertical dimension measured by radiograph (at three different time intervals), Masseter muscle electromyographic (EMG) measurement by EMG analysis (at three different positions of jaws) and bite force measured by force transducer (at two different time intervals). The obtained data were statistically analyzed by using ANOVA-F test at 5% level of significance. If the F test was significant, Least Significant Difference test was performed to test further significant differences between variables. RESULTS Comparison between mean differences in occlusal vertical dimension for tested groups showed that it was only statistically significant at 1 year after immediate dentures insertion. Comparison between mean differences in wavelet packet coefficients of the electromyographic signals of masseter muscles for tested groups was not significant at rest position, but significant at initial contact position and maximum voluntary clench position. Comparison between mean differences in maximum biting force for tested groups was not statistically significant at 5% level of significance. CONCLUSION Immediate complete overdentures whether tooth or implant supported prosthesis is recommended than totally mucosal supported prosthesis.

Impact of salicylic acid and calcium chloride on quality attributes of peach stored at refrigeration temperature

Nosheen Khalid,Shehla Sammi,Sumaira Miskeen,Imran Khan,Inam-u-llah,Muhammad Liaquat,Khurshid Anwar,Adnan Khan,Abdul Majeed Shah,Abdul Sattar Shah,Awatif Abid Mohammed Al-Judaibi,하재원,Muhammad Jahangir 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.9

Salicylic acid (SA) in different concentration were used to assess its individual effect as well as combined impact with 3% calcium chloride (CaCl2) on Swat No. 8 variety of peach stored at refrigerated temperature (6 ± 2 °C) for 21 days. Interestingly, the results revealed that applying 2 mmol L−1 SA with 3% CaCl2 maintained maximum nutritional value and least decay percent (44.1%) as compared to other treatments during storage. Moreover, this combination also exhibited significant weight loss and chilling injury at 6 ± 2 °C whereas increased levels of total phenolic, flavonoids, tannin, alkaloid, ascorbic acid, and antioxidant activity were observed as compared to other treatments. The combination treatment (2 mmol L−1 SA with 3% CaCl2) maintained other sensory attributes of peach fruit during refrigerated storage, therefore, its commercial use was recommended to store peach fruit for up to three weeks without any significant nutritional and physical loss.

Comparison of Antimicrobial Activity, Phytochemical Profile and Minerals Composition of Garlic Allium sativum and Allium tuberosum

Khalid, Nauman,Ahmed, Iftikhar,Latif, Malik Shah Zaman,Rafique, Tariq,Fawad, Sardar Atiq The Korean Society for Applied Biological Chemistr 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.3

Allium species are considered to be one of the world's oldest cultivated vegetables. Most commonly used species of garlic in Pakistan and India is Allium sativum, while Allium tuberosum is mainly consumed and cultivated in China, Southeast Asia, and North-east part of India. The present study was conducted to compare the antimicrobial activity, nutritional value and antioxidant profile of Allium sativum and Allium tuberosum. The outcome indicates that Allium tuberosum have slightly higher antimicrobial activity, higher mineral profile, and enriched in antioxidants in comparison with Allium sativum. The highest antimicrobial activity of Allium tuberosum was noticed against Staphylococcus aureus and Bacillus subtilis with 43.9 and 40.7 mm zone of inhibition using 100% extract. Allium tuberosum contains high contents of calcium ($28.662{\pm}.00mg/100g$), potassium ($10.62{\pm}0.50$) and zinc ($59.00{\pm}1.00$). Allium tuberosum also showed higher antioxidant activity ($0.24{\pm}0.03mg$ vitamin C equivalent (VCE)/g fresh weight in ferric reducing antioxidant power assay, $0.18{\pm}0.02mg\;VCE/g$ fresh weight in 2,2-diphenyl-1-picrylhydrazyl assay and $1.09{\pm}0.12mg\;VCE/g$ fresh weight in 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) assay) in comparison with Allium sativum.

COVID-19 Diagnosis from CXR images through pre-trained Deep Visual Embeddings

Khalid, Shahzaib,Syed, Muhammad Shehram Shah,Saba, Erum,Pirzada, Nasrullah International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.5

COVID-19 is an acute respiratory syndrome that affects the host's breathing and respiratory system. The novel disease's first case was reported in 2019 and has created a state of emergency in the whole world and declared a global pandemic within months after the first case. The disease created elements of socioeconomic crisis globally. The emergency has made it imperative for professionals to take the necessary measures to make early diagnoses of the disease. The conventional diagnosis for COVID-19 is through Polymerase Chain Reaction (PCR) testing. However, in a lot of rural societies, these tests are not available or take a lot of time to provide results. Hence, we propose a COVID-19 classification system by means of machine learning and transfer learning models. The proposed approach identifies individuals with COVID-19 and distinguishes them from those who are healthy with the help of Deep Visual Embeddings (DVE). Five state-of-the-art models: VGG-19, ResNet50, Inceptionv3, MobileNetv3, and EfficientNetB7, were used in this study along with five different pooling schemes to perform deep feature extraction. In addition, the features are normalized using standard scaling, and 4-fold cross-validation is used to validate the performance over multiple versions of the validation data. The best results of 88.86% UAR, 88.27% Specificity, 89.44% Sensitivity, 88.62% Accuracy, 89.06% Precision, and 87.52% F1-score were obtained using ResNet-50 with Average Pooling and Logistic regression with class weight as the classifier.

Field Evaluation of Mungbean Recombinant Inbred Lines against Mungbean Yellow Mosaic Disease Using New Disease Scale in Thailand

Khalid P. Akhtar,R. Kitsanachandee,P. Srinives,G. Abbas,M. J. Asghar,T. M. Shah,B. M. Atta,O. Chatchawankanphanich,G. Sarwar,M. Ahmad,N. Sarwar 한국식물병리학회 2009 Plant Pathology Journal Vol.25 No.4

Studies were conducted to identify the sources of resistance in mungbean recombinant inbred lines (RILs) in Thailand against mungbean yellow mosaic disease (MYMD). 146 mungbean RILs in F8 series were evaluated in a field including resistant parent NM-10- 12-1 and susceptible parent KPS 2 during summer 2008 under high inoculum pressure. The RILs were subsequently scored for disease symptom severity ratings (DSSR) using a new scale. Observations regarding DSSR and % disease index (%DI) showed that the tested RILs responded differently to the disease. A large number of RILs (132) were found highly susceptible, 12 were susceptible, 3 were tolerant and one was resistant. Overall screening results showed that three RILs, viz. line no. 30, 100 and 101 had minimum DSSR and % disease index thus they are good source of resistance to MYMD in spite of high disease pressure and can therefore be used directly as varieties to manage the disease in Thailand.

Critical Evaluation of Frontal Image-Based Gender Classification Techniques

Hira Khalid Khan,Abdul Salam Shah,Muhammad Asim Khan 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.10

The face describes the personality of humans and has adequate importance in the identification and verification process. The human face provides, information as age, gender, face expression and ethnicity. Research has been carried out in the area of face detection, identification, verification, and gender classification to correctly identify humans. The focus of this paper is on gender classification, for which various methods have been formulated based on the measurements of face features. An efficient technique of gender classification helps in accurate identification of a person as male or female and also enhances the performance of other applications like Computer-User Interface, Investigation, Monitoring, Business Profiling and Human Computer Interaction (HCI). In this paper, the most prominent gender classification techniques have been evaluated in terms of their strengths and limitations.

Composition and diversity of plants in Sibuti mangrove forest, Sarawak, Malaysia

Kaleem Shah,Abu Hena Mustafa Kamal,Zamri Rosli,Khalid Rehman Hakeem,Mohammed Muzammel Hoque 한국산림과학회 2016 Forest Science And Technology Vol.12 No.2

Sarawak is endowed with numerous pristine and estuarine mangroves. However, information pertaining to the species composition and diversity of pristine mangroves of Sarawak is scanty. Hence, this study was carried out to assess the plant composition and diversity of Sibuti mangrove forest, Miri, Sarawak to investigate the current status and diversity of vegetation. Nine mangrove plant species were recorded employing the line transect (100240 m) survey method. Major mangrove species were Rhizophora apiculata, Xylocarpus granatum, and Nypa fruticans. The stand density was recorded as 1938.46 § 482.24 trees ha ¡1, 1722.22 § 254.58 saplings ha ¡1, and 6222.22 § 384.90 seedlings ha ¡1. The mean diameter, height, and basal area for the whole forest stand were 20.83 § 13.79 cm, 13.53 § 5.55 m, and 201.83 § 12.68 m2 ha ¡1, respectively. The mean diameter of the dominant species R. apiculata was 24.10 § 13.90 cm, height 15.18 § 5.09 m, and basal area 176.13 § 12.73 m2 ha ¡1. The importance value index (IVI) of R. apiculata was 202.24 followed by 63.85 for X. granatum. Shannon diversity indices (H0), Margalef richness (D), and Peilou evenness (J0) of the forest stand were 1.18, 1.41, and 0.54, respectively. Similarity of species composition showed two major clusters for the whole forest stand. The findings of this study suggest that Sibuti mangrove forest stand is undisturbed and healthy. This forest could be managed and conserved for multi-sectoral uses such as ecotourism, biodiversity, research, and education rather than solely as a wildlife sanctuary.

Field Evaluation of Mungbean Recombinant Inbred Lines against Mungbean Yellow Mosaic Disease Using New Disease Scale in Thailand

Akhtar, Khalid P.,Kitsanachandee, R.,Srinives, P.,Abbas, G.,Asghar, M.J.,Shah, T.M.,Atta, B.M.,Chatchawankanphanich, O.,Sarwar, G.,Ahmad, M.,Sarwar, N. The Korean Society of Plant Pathology 2009 Plant Pathology Journal Vol.25 No.4

Studies were conducted to identify the sources of resistance in mungbean recombinant inbred lines (RILs) in Thailand against mungbean yellow mosaic disease (MYMD). 146 mungbean RILs in $F_8$ series were evaluated in a field including resistant parent NM-10-12-1 and susceptible parent KPS 2 during summer 2008 under high inoculum pressure. The RILs were subsequently scored for disease symptom severity ratings (DSSR) using a new scale. Observations regarding DSSR and % disease index (%DI) showed that the tested RILs responded differently to the disease. A large number of RILs (132) were found highly susceptible, 12 were susceptible, 3 were tolerant and one was resistant. Overall screening results showed that three RILs, viz. line no. 30, 100 and 101 had minimum DSSR and % disease index thus they are good source of resistance to MYMD in spite of high disease pressure and can therefore be used directly as varieties to manage the disease in Thailand.

Comparison of Antimicrobial Activity, Phytochemical Profile and Minerals Composition of Garlic Allium sativum and Allium tuberosum

Nauman Khalid,Iftikhar Ahmed,Malik Shah Zaman Latif,Tariq Rafique,Sardar Atiq Fawad 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.3

Allium species are considered to be one of the world’soldest cultivated vegetables. Most commonly used species ofgarlic in Pakistan and India is Allium sativum, while Alliumtuberosum is mainly consumed and cultivated in China, SoutheastAsia, and North-east part of India. The present study wasconducted to compare the antimicrobial activity, nutritional valueand antioxidant profile of Allium sativum and Allium tuberosum. The outcome indicates that Allium tuberosum have slightly higherantimicrobial activity, higher mineral profile, and enriched inantioxidants in comparison with Allium sativum. The highestantimicrobial activity of Allium tuberosum was noticed againstStaphylococcus aureus and Bacillus subtilis with 43.9 and 40.7mm zone of inhibition using 100% extract. Allium tuberosumcontains high contents of calcium (28.662±.00mg/100 g), potassium(10.62±0.50) and zinc (59.00±1.00). Allium tuberosum alsoshowed higher antioxidant activity (0.24±0.03 mg vitamin Cequivalent (VCE)/g fresh weight in ferric reducing antioxidantpower assay, 0.18±0.02 mg VCE/g fresh weight in 2,2-diphenyl-1-picrylhydrazyl assay and 1.09±0.12 mg VCE/g fresh weight in2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) assay) incomparison with Allium sativum.