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Journal of Thermal Science 2020年第5期29卷 1309-1321页

作者： LAARABA Adel mebarki ghazali Department of physics University of BatnalBatna 05000Algeria Faculty of Technology LESEI LaboratoryDepartment of Mechanical EngineeringUniversity of Batna2Batna 05000Algeria

Heat transfer in a finned absorber of a parabolic trough collector was studied numerically. The main aim of this work was to study the effect of attached fins on the enhancement of the thermal performance of a parabolic trough collector. The values of the fin's length varied from 0 to 20 mm;their thicknesses varied from 0 to 8 mm and their number was 5. The parameters used in the current study are: the thermal and dynamic field,friction coefficient, Nusselt number, the thermal efficiency and thermal enhancement index. Obtained results show that inclusion of fins to the lower half of the absorber tube can enhance the heat transfer between the absorber tube and working fluid. The increase of the fin*s length increases the friction factor, Nusselt number and thermal efficiency, and the increase of fin's thickness also increases the previous parameters. Starting the value 6 mm of thickness, its effect remains the same, but thickness is less effective than length. The values 15 mm of length and 6 mm of thickness are selected as optimal values. Results show that the inclusion of the fins enhances the thermal performance of the parabolic collector by 8.45%.

关键词： solar energy Nusselt number thermal efficiency parabolic trough collector forced convection

Numerical Simulation and Control of Two-Phase Flow with Evaporation in a Vertical Tube Submitted to a Conjugate Heat Transfer

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Journal of Energy and Power Engineering 2013年第7期7卷 1282-1292页

作者： ghazali mebarki Samir Rahal Department of Mechanical Engineering LESEI Laboratory Faculty of Technology University Hadj Lakhdar of Batna Batna 05000Algeria

A better understanding of two-phase flows with evaporation allows leading to an optimal design of evaporators. For that purpose, numerical simulations are very useful. In this paper, a numerical study has been carried out in order to model and simulate the combination of a two-phase flow with evaporation in a vertical tube. The VOF （volume-of-fluid） multiphase flow method and a phase-change model for the mass transfer have been used. For an accurate modeling, the effect of axial conduction has been also taken into account using a conjugate heat transfer model. Since thermal oscillations are undesirable as they can lead to the failure of the tube, flow instabilities have also been analyzed, using FFT （fast Fourier transforms）, in order to comprehend their behavior and influence. A control study of the flow instabilities in the tube is also presented. For that purpose tube inlet temperature has been varied using a gain control parameter.

关键词： Two-phase flow evaporation VOF method conjugate heat transfer flow instabilities control of instabilities.

Stricture Free Survival after Urethroplasty: A 6-Year Malaysian Referral Centre Experience

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Open Journal of Urology 2024年第8期14卷 474-485页

作者： Jeffrey Jiajian Lee Ley Khim Teo Jieling Cheng Hamid ghazali Urology Department Hospital Tengku Ampuan Afzan Kementerian Kesihatan Malaysia Putrajaya Malaysia Clinical Research Centre Hospital Pulau Pinang Kementerian Kesihatan Malaysia Putrajaya Malaysia Institute for Clinical Research National Institutes of Health Ministry of Health Malaysia Kuala Lumpur Malaysia

Background: Urethroplasty is the gold standard for treatment for urethral strictures. We describe our results of urethroplasty and analyse the risk factors associated with stricture recurrence and stricture-free survival. Methods: A retrospective review of urethroplasty surgery carried out from 2016-2022. Patient records were analysed to obtain demographics, clinical, pathological and outcome data. Success of surgery is defined as postoperative Qmax > 15 ml/s or absence of any instrumentation of urethra such as urethral dilatation, after removal of urethral indwelling catheter. Results: A total of 66 patients who fulfilled the inclusion criteria were selected. Mean age was 43.8. Mean follow up was 27.2 ± 21.8 months. Stricture recurred in 18 patients (27.3%). Estimated stricture free survival time was 59.6 months (95% CI: 50.87 - 68.37). Previous surgical history for stricture was found to be predictive of stricture recurrence. After adjusting for age, BMI, aetiology of stricture and stricture length, previous surgical history had a risk of stricture recurrence approximately three times higher compared to those without. Conclusion: Previous surgical intervention for urethral stricture was found to be the most significant factor for stricture recurrence. We strongly advocate that the first curative surgery done for urethral strictures should be done in high volume centres and by experienced reconstructive urologists.

关键词： Urethroplasty Urethra Stricture Recurrence Factors Survival Reconstructive Urology

Severe Cut Throat Injury in a Child: A Case Report and Review of Literature

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第4期13卷 285-292页

作者： Nafisatu Bello-Muhammad Hamisu Abdullahi Yasir Nuhu Jibril Auwal Adamu Manir Hamza Anka Muhammad ghazali Hasheem Department of ENT Aminu Kano Teaching Hospital Bayero University Kano Nigeria Department of ENT Abubakar Tafawa Balewa University Teaching Hospital Bauchi Nigeria Department of ENT Federal University of Health Sciences Azare Bauchi State Nigeria

Background: Cut-throat injury is a potentially fatal condition that may be associated with serious morbidity and mortality. The neck region is particularly at risk of serious injuries due to the location of vital structures, including nerves, viscera, and major vessels. Although cut-throat injury is said to be rare in children, its occurrence has been reported in some series. Management of this condition requires a multidisciplinary approach for a better outcome. Aim: The aim of this report is to highlight the successful management of an alarming case of severe cut-throat injury with associated laryngeal injury in a child. Case presentation: A 12-year-old boy presented with a cut-throat following an assault by an unknown person. Examination revealed an acutely ill child, conscious but pale. He sustained a deep transverse laceration that transected the thyroid cartilage, exposing the laryngeal cavity. An assessment of Zone II penetrating neck injury was made. He was resuscitated, and had emergency neck exploration, tracheostomy, and repair of the injuries. The patient was followed up for 6 months, and had a good voice outcome, with no significant complication. Conclusion: Cut-throat injury is rare in children. But it is a potentially life-threatening condition. It is therefore important to recognize this entity and develop effective protocol of management in our environment.

关键词： Cut-Throat Neck Trauma Penetrating Neck Injury Neck Exploration Tracheostomy

Research on Narrative Design of Creative Products Based on Regional Cultural Elements

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Journal of Contemporary Educational Research 2024年第1期8卷 65-73页

作者： Qiqiong Huang Mohd Mustafa Mohd ghazali City Graduate School City University Malaysia46100 Petaling JayaSelangorMalaysia Faculty of Creative Industries City University Malaysia46100 Petaling JayaSelangorMalaysia

The research explored the ways and means of narrative design in which regional cultural elements are integrated into cultural and creative *** also researched a new way of thinking and methods of creative product design based on regional cultural elements in order to satisfy consumers’emotional and cultural *** theory takes the perspective of narrative expression in the design of cultural and creative *** regional cultural elements were used for better interactive communication with consumers in the form of cultural and creative *** the narrative of cultural and creative product design,intervening in the development of regional cultural and creative design from the perspective of narratology can better exert and create the cultural value of the region itself,with cultural and creative products playing an important role in“local cultural stories.”This research adopted a qualitative approach and provided ideas and guidance for the narrative design and expression of regional cultural elements in creative products through comparative analysis of case *** research highlighted the role of narrative design in creating multi-layered experiences,weaving regional cultural stories into products,and the importance of deep understanding and effective use of regional cultural elements in design.

关键词： Regional cultural elements Creative products Narrative design

Quran memorisation and heart rate variability:How do they correlate?

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World Journal of Clinical Cases 2024年第29期12卷 6275-6284页

作者： Ahmad Rohi ghazali Nor Malia Abd Warif Noor Anisah A Yazit Norsham Juliana Ismarulyusda Ishak Farah Wahida Ibrahim Arimi Fitri Mat Ludin Dzalani Harun Santibuana Abd Rahman Wan Nor Atikah Che Wan Mohd Rozali Biomedical Science Programme Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Center for Toxicology and Health Risk Studies Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Faculty of Medicine and Health Sciences Universiti Sains Islam MalaysiaNilai 71800Malaysia Center for Healthy Ageing and Wellness Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Center for Rehabilitation and Special Needs Studies Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Occupational Therapy Programme Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Faculty of Pharmacy and Health Sciences Universiti Kuala Lumpur Royal College of Medicine PerakIpoh Perak 30450Malaysia

BACKGROUND Heart rate variability(HRV)was shown to be affected by performing religious *** To examine the relationship between the level of Quran(the holy book of Muslims)memorisation and HRV among *** This experimental study included 16 Tahfiz students and 16 non-Tahfiz students(n=32).The HRV was measured in three tasks:Recalling familiar verses,memorising new verses,and recalling the newly memorised verses of the *** analysis was done using these parameters:Standard deviation of N-N(heartbeat peak)interval;low frequency(LF);high frequency(HF)and LF/HF *** There were significant differences between tasks for all parameters(P<0.05).However,between the groups,only the LF/HF ratio had significant differences,with F=5.04,P<*** correlation showed a moderate positive correlation between the number of pages memorised and the LF/HF ratio(r=0.61,P<0.05).CONCLUSION Quran memorisation increased the HRV and our results suggested that this activity could be developed as an effective sympathovagal modulation training activity.

关键词： Heart rate variability Autonomic nervous system Quran memorisation Tahfiz student Heartbeat

Combined laparoscopic and endoscopic method for foreign body removal from descending colon: A case report

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World Journal of Surgical Procedures 2024年第1期14卷 1-7页

作者： Khairunnisa Che ghazali Huzairi Yaacob Ahmad Shanwani Mohamed Sidek Department of Surgery Hospital Raja Perempuan Zainab IIKota Bharu 15586Malaysia

BACKGROUND The majority of published reports on foreign bodies(FBs)involve the rectum and applied a transanal ***,patients with FB above the rectum are subjected to laparotomy for ***,we illustrate the case of a man with an FB that had migrated into the descending colon,and its successful removal via a laparoscopic *** SUMMARY A 43-year-old man,who had the habit of FB insertion into his anus to aid defe-cation,presented upon experience of such an FB slipping through and migrating upward to the distal *** abdominal radiograph revealed a bottle-shaped FB,positioned in the left iliac fossa *** FB was successfully removed via a laparoscopic-assisted procedure in which we combined diagnostic laparoscopic and endoscopic techniques during *** patient was monitored for 2 d postoperatively and subsequently discharged *** A minimally invasive approach should be adopted to aid extraction of colorectal FB as it is effective and safe.

关键词： Foreign body Colorectal Laparoscopic approach Removal technique Minimally invasive Case report

Impacts of 2 species of predatory Reduviidae on bagworms in oil palm plantations

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Insect Science 2017年第2期24卷 285-294页

作者： Syari Jamian Ahmad Norhisham Amal ghazali Azlina Zakaria Badrul Azhar Faculty of Agriculture Universiti Putra Malaysia Serdang Selangor Malaysia Cardiff School of Biosciences Cardiff University Cardiff Wales UK Faculty of Forestry Universiti Putra Malaysia Serdang Selangor Malaysia Sime Darby Research Sdn. Bhd. Banting Selangor Malaysia Biodiversity Unit Institute of Bioscience Universiti Putra Malaysia Serdang Selangor Malaysia

Integrated pest management （IPM） is widely practiced in commercial oil palm agriculture. This management system is intended to minimize the number of attacks by pest insects such as bagworms on crops, as well as curb economic loss with less dependency on chemical pesticides. One practice in IPM is the use of biological control agents such as predatory insects. In this study, we assessed the response of predatory natural enemies to pest outbreak and water stress, and document the habitat associations of potential pest predators. The abundances of 2 predatory insect species, namely Sycanus dichotomus and Cosmolestes pictieeps （Hemiptera： Reduviidae）, were compared bagworm outbreak sites and nonoutbreak sites within oil palm plantations. We also examined habitat characteristics that influence the abundances of both predatory species. We found that the abundance of C. picticeps was significantly higher in bagworm outbreak sites than in nonoutbreak sites. There were no significant differences in the abundance ofS. dichotomus among outbreak and non-outbreak sites. Both species responded negatively to water stress in oil palm plantations. Concerning the relationship between predatory insect abundance and in situ habitat quality characteristics, our models explained 46.36% of variation for C. picticeps and 23.17% of variation for S. dichotomus. Both species of predatory insects thrived from the planting of multiple beneficial plants in oil palm plantations. The results suggest that C. picticeps can be used as a biological agent to control bagworm populations in oil palm plantations, but S. dichotomus has no or little potential for such ecosystem service.

关键词： bagworms beneficial plants biological control habitat quality integratedpest management oil palm predatory insects

Wear behavior of copper-containing ferritic iron under a dry sliding condition

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第12期14卷 906-914页

作者： Junaidi SYARIF Agung ISWADI Mariyam Jameelah ghazali Zainuddin SAJURI Mohd Zaidi OMAR Department of Mechanical and Materials Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia

The effect of solute Cu and Cu precipitates on the wear behavior of ferritic iron under an unlubricated condition was *** specific wear rate of Cu-containing steel abruptly decreased up to 50 N of load,and then gradually decreased with further increased *** specific wear rate of the as-quenched specimen,in which Cu was in a solid solution,was the lowest among all the specimens at low loads,and all specimens had almost the same specific wear rate at high *** observation showed that the hardness increments of all specimens decreased with increased depth below the worn *** as-quenched specimen had a relatively large depth of deformed region than the other specimens even though the increments in hardness were almost the same for all specimens at low *** the same hardness at an unworn state,the as-quenched and over-aged specimens exhibited a substantial increase in hardness and large deformed regions below the worn *** finding indicated that the enhancement in plastic deformation and work hardening led to the decrease in the specific wear rate of the as-quenched specimen at low loads and the improvement in the wear resistance of all specimens at high loads.

关键词： Steel Hardness Sliding wear Work hardening Plastic deformation

Communication infrastructure for situational awareness enhancement in WAMS with optimal PMU placement

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Protection and Control of Modern Power Systems 2021年第1期6卷 124-135页

作者： Bhargav Appasani Amitkumar Vidyakant Jha Sunil Kumar Mishra Abu Nasar ghazali School of Electronic Engineering KIIT UniversityBhubaneswar751024India

Real time monitoring and control of a modern power system has achieved significant development since the incorporation of the phasor measurement unit (PMU). Due to the time-synchronized capabilities, PMU has increased the situational awareness (SA) in a wide area measurement system (WAMS). Operator SA depends on the data pertaining to the real-time health of the grid. This is measured by PMUs and is accessible for data analytics at the data monitoring station referred to as the phasor data concentrator (PDC). Availability of the communication system and communication delay are two of the decisive factors governing the operator SA. This paper presents a pragmatic metric to assess the operator SA and ensure optimal locations for the placement of PMUs, PDC, and the underlying communication infrastructure to increase the efficacy of operator SA. The uses of digital elevation model (DEM) data of the surface topography to determine the optimal locations for the placement of the PMU, and the microwave technology for communicating synchrophasor data is another important contribution carried out in this paper. The practical power grid system of Bihar in India is considered as a case study, and extensive simulation results and analysis are presented for validating the proposed methodology.

关键词： Situational awareness Phasor measurement unit Optimal placement Microwave communication