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Demonstration of a Polymer-Based Single Step Waveguide by 3D Printing Digital Light Processing Technology for Isopropanol Alcohol-Concentration Sensor

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Photonic Sensors 2022年第1期12卷 10-22页

作者： Kankan SWARGIARY Romuald JOLIVOT waleed Soliman mohammed Center of Research in Optoelectronics Communication and Computational Systems(BU-CROCCS)School of EngineeringBangkok UniversityPathum Th am 12120Thailand

A polymer based horizontal single step waveguide fbr the sensing of alcohol is developed and *** waveguide is fabricated by 3-dimensional(3D)printing digital light processing(DLP)technology using monocure 3D rapid ultraviolet(UV)clear resin with a refractive index of n=*** fabricated waveguide is a one-piece tower shaped ridge *** is designed to achieve the maximum light confinement at the core by reducing the effective refractive index around the cladding *** the surface roughness generated from the 3D printing DLP technology,various waveguides with different gap sizes are *** is done fbr the different gap waveguides to achieve the minimum feature gap size utilizing the light re-coupling principle and polymer swelling *** effect occurs due to the polymer-alcohol interaction that results in the diffusion of alcohol molecules inside the core of the waveguide,thus changing the waveguide from the leaky type(without alcohol)to the guided type(with alcohol).Using this principle,the analysis of alcohol concentration performing as a larger increase in the transmitted light in tensity can be *** this work,the sensitivity of the system is also compared and analyzed fbr different waveguide gap sizes with different concentrations of isopropanol alcohol(IPA).A waveguide gap size of 300 jim gives the highest in crease in the transmitted optical power of 65%when tested with 10μL(500ppm)concentration of *** with all other gaps,it also displays faster response time(/=5seconds)fbr the optical power to change right after depositing IPA in the *** measured limit of detection(LOD)achieved fbr 300μm is 0.366 *** addition,the fabricated waveguide gap of 300μm successfully demonstrates the sen sing limit of IPA concentration below 400μpm which is considered as an exposure limit by"National Institute for Occupational Safety and Health".All the mechanical mount and the alignments are done by 3D printing fused d

关键词： Polymer 3D printing digital light processing(DLP) isopropanol alcohol(IPA) swelling effect fused deposition method(FDM)

Study of Utilization of Embedded Metal Nanoparticles in Dielectric Thin Film for Humidity Sensing

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Photonic Sensors 2020年第2期10卷 155-161页

作者： Hala J.EL-KHOZONDAR waleed S.mohammed Islamic University of Gaza Electrical Engineering DepartmentGaza-108Palestine Bangkok University BU-CROCCSSchool Of EngineeringPathumthani 12120Thailand

This paper presents a theoretical study of the utilization of the shift in the reflection peak of the thin dielectric film with embedded metal nanoparticles(NPs)towards humidity and vapor *** presence of the NPs in the film results in a complex effective ***,the reflected light at the superstrate-film interface causes a phase shift when the index of the surrounding is *** alters the reflected spectrum of the formed Fabry-Perot,for both the reflection peak wavelength and ***,the dynamic range of the proposed sensor is optimized through the variation of the film thickness and nanoparticle metal type,as well as the volume fraction.

关键词： Nanoparticles polymer film humidity sensor

Ecological Sound Control Strategies for Population Suppression of Date Palm Borers Oryctes spp.

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Journal of Agricultural Science and Technology(A) 2017年第1期7卷 18-24页

作者： mohammed Zaidan Khalaf Hussain Fadhel Alrubeai mohammed waleed Khudhaer Aysar Abdulkarem Abdulhusein Integrated Pest Control Research Center Directorate of Agricultural Research Ministry of Science & Technology Baghdad00964 Iraq Directorate of Baghdad Agriculture Ministry of Agriculture Baghdad 00964 Iraq

Cultural practices, hand collection of larvae, light traps and entomopathogenic fungi were investigated to manage of palm borers Oryctes spp. in date palm orchards during the years 2010-2015. Cultural practices, such as sanitation and pruning frond bases, hand collection of larvae during regular annual service work and light traps with solar energy were practiced annually in one orchard for five years. In the second orchard, cultural practices were applied for two years, light trap for one year only, and no hand collection of larvae was done during the period. The third orchard was used as a control treatment. Results showed reduction in population density of larvae （91.6% and 53.0%） and adult （76.1% and 41.1%） ofOryects spp. in the 1st and 2nd orchard, respectively The results also demonstrated the impact of moon light phases on the number of Oryctes spp. adults caught by light trap and the existence of an inverse relation between moon light and flight activity of adults. Biological experiments also revealed that entomopathogenic fungi can cause high mortality rate reaching 100% after 29 d. Beauveria bassiana scored higher mortality rate in short time, especially at concentration of 1 × 10^11 conidia/mL with LT50 = 12.75 and LT90 = 20; while, Metarhizium anisopliae caused the higher percentage of malformed adults. The results depicted the effectiveness of some integrated ecological sound control methods for monitoring and population suppression of Oryects spp. in date palm orchards.

关键词： Integrated pest management cultural practices hand collection of larvae light traps moon light entomopathogenic fungi Oryects spp..

伊斯兰金融的风险管理Sakuk Bonds分析

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伊斯兰金融的风险管理Sakuk Bonds分析

作者： ALHARBI, waleed mohammed S（艾哈比）北京交通大学

学位级别：硕士

这项关于伊斯兰金融风险管理的研究主要涉及伊斯兰债券这样的比较小的债券领域,这一债券对于伊斯兰金融系统正在采纳的金融标准来说是十分重要的。可以初步预测,由于投资者和金融家失去了投资的主要激励因素,这种无息金融系统起初会造... 详细信息

这项关于伊斯兰金融风险管理的研究主要涉及伊斯兰债券这样的比较小的债券领域,这一债券对于伊斯兰金融系统正在采纳的金融标准来说是十分重要的。可以初步预测,由于投资者和金融家失去了投资的主要激励因素,这种无息金融系统起初会造成融资风险,但是从另一方面来看,这种情况不一定就会如此简单的发生,因为这整个系统就是建立在这种无息原则之上的。这项研究推测,伊斯兰债券作为债券的伊斯兰版本必然会涉及普通的风险,特别是有可能会遭遇融资风险。这项研究的目的是通过从与传统债券的对照表格数据中推出的伊斯兰债券资金周转模式的公平市值,审查伊斯兰债券结构的金融风险,同时应用方程式于发行总值和未偿贷款的价值流动性和资金流量之中。伊斯兰金融系统中的风险类型和程度显然是不同于全球所应用的传统融资或债券,因为前者是基于伊斯兰的信仰,这种信仰不允许利息发生在交易之前。债券(伊斯兰债券)和股票的区别包括一些潜在的风险和对这些风险的管理。研究结果证实,相比于传统金融债券伊斯兰债券的金融风险在信贷和流动性上的风险高。

关键词：伊斯兰债券伊斯兰金融 Sakuk Bonds 风险管理融资风险金融风险传统融资 finance liquidity 金融债券

ALA-PDT治疗肿瘤性及炎症性皮肤病的临床研究

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ALA-PDT治疗肿瘤性及炎症性皮肤病的临床研究

作者：文立德（waleed mohammed HAMOOD AL-DUMAINI）南昌大学

学位级别：硕士

目的观察5-氨基酮戊酸光动力疗法（ALA-PDT）在肿瘤性皮肤病及炎症性皮肤病治疗中的临床疗效与不良反应。从疗效、不良反应、复发率、创伤性、美容、病人满意度多方面评价ALA-PDT在皮肤病治疗的利弊,从而指导皮肤科医师选择和实施最佳... 详细信息

目的观察5-氨基酮戊酸光动力疗法（ALA-PDT）在肿瘤性皮肤病及炎症性皮肤病治疗中的临床疗效与不良反应。从疗效、不良反应、复发率、创伤性、美容、病人满意度多方面评价ALA-PDT在皮肤病治疗的利弊,从而指导皮肤科医师选择和实施最佳治疗方案。方法1、本研究所有患者均来自南昌大学第一附属医院皮肤科门诊部,于2020年4月至2021年1月临床诊断或病理诊断为皮肤肿瘤、尖锐湿疣、中重度痤疮及秃发性毛囊炎等患者50名。2、所有患者均接受2～6次ALA-PDT治疗,并记录皮疹改变,同时评价临床疗效、副作用、复发率、美容效果、皮肤损伤情况和患者满意度。结果1、疗效观察:（1）非黑色素性皮肤肿瘤8例,其中术后鳞状细胞癌4例,治愈2例,显效2例,总有效率100%;基底细胞癌1例,治愈;多发性日光性角化1例,治愈;Bowen病1例,显效,乳房外Paget病1例,有效。（2）尖锐湿疣38例,治愈29例,显效6例,总有效率92%。（3）重度痤疮、毛囊炎4例,其中重度痤疮3例,显效,有效率100%;秃发性毛囊炎1例,治愈。不同疾病类型总有效率进行比较,差异无统计学意义。2、不良反应:13例患者在治疗期间出现不良反应,总发生率为26%。主要表现为轻度烧灼感、红斑、发红、糜烂、恶心呕吐、局部肿胀、外周色素改变。其中轻度烧灼感6例,发生率12%;烧灼痛伴糜烂3例,发生率6%;局部及外周色素改变3例,发生率6%;局部红斑3例,发生率6%;恶心呕吐1例,发生率2%。3、创伤评估与处理:（1）疼痛评估与处理:50例患者中有2例疼痛评分为2分（当注意到疼痛时会有轻微的疼痛感）,均无需处理。其余48名患者的评分为0（无痛）。（2）功能评估:50例患者均为Ⅲ级（满意,功能不受限,不影响日常生活活动,无局部异常）。4、美容效果评估:50例患者中,1级2例,占4%,在治疗部位的表面和边缘有局限性红斑或显著的棕色色素斑;2级2例,占4%,有很薄的疤痕或无疤痕;其余为3级,占92%,无疤痕和色素改变。5、复发率（RR）:本研究共有9例复发。皮肤肿瘤组,其中Bowen病1例,复发率为100%,Paget病1例,复发率为100%;日光性角化、基底细胞癌、鳞状细胞癌无复发。生殖器疣组38例中复发6例为15.79%,其中尿道口尖锐湿疣3例,复发率为7.9%,肛管尖锐湿疣1例,复发率为2.6%,宫颈尖锐湿疣1例复发率,2.6%,阴茎尖锐湿疣1例,复发率为2.6%;外阴尖锐湿疣无复发;痤疮和毛囊炎组仅1例炎性囊性痤疮复发;斑秃性毛囊炎无复发。6、患者满意度调查:32例为5分（非常满意）,占64%;15例为4分（满意）,占30%;3例为3分（一般）,占6%。患者总满意率为94%。结论1、ALA-PDT是一种新型的非侵入性的光化学疗法,可以广泛运用于皮肤疾病的治疗。2、对于肿瘤性和炎症性皮损,尤其是大面积皮损,联合治疗可取得更好的疗效,并减少复发率;因此,建议首先应用一种或多种其他方式（手术、冷冻治疗、电灼、局部化疗药物）治疗效果不好,然后进行ALA-PDT治疗。3、ALA-PDT治疗的副作用发生率低,仅有轻度疼痛、烧灼感、糜烂、外周色素改变等不良反应。4、ALA-PDT治疗是一种无创性疗法,美容效果好,患者满意度高,不良反应少。PDT治疗也适用于特殊患者群体,例如器官移植受者、免疫功能低下的人、特殊部位（头皮、面部、生殖器）的肿瘤和炎症病变以及老年患者,尤其是患有多种慢性疾病的患者,不能忍受其他创伤治疗。

关键词： ALA-PDT治疗皮肤肿瘤尖锐湿疣(CA) 痤疮秃发性毛囊炎(FD)

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设施农田土壤氮污染现状及修复技术

现代农业科技 2023年第11期 176-180,185页

作者：李慧曹逸凡 waleed Awadelkareem Husain mohammed mohammed Dawood Yahya Haroun 王桂良余彬彬钱晓晴扬州大学江苏扬州225009 扬州瑞华环境与生物工程研究所有限公司江苏扬州225127 扬州大学土壤健康研究所江苏扬州225009

我国部分地区设施农田土壤污染问题突出。其中,化肥的使用尤其是氮肥的过量施用给农田土壤造成了较为严重的污染,还间接导致设施农田土壤次生盐渍化、酸化、养分失调等危害。本文概述了土壤修复技术在改良设施农田土壤方面的应用,包括... 详细信息

我国部分地区设施农田土壤污染问题突出。其中,化肥的使用尤其是氮肥的过量施用给农田土壤造成了较为严重的污染,还间接导致设施农田土壤次生盐渍化、酸化、养分失调等危害。本文概述了土壤修复技术在改良设施农田土壤方面的应用,包括物理方法、化学方法和生物方法,分析了设施农田氮污染修复存在的问题,并提出防治设施农田土壤污染的对策,针对设施农田氮污染修复技术研究中尚待解决的科学问题及未来发展方向进行了展望,为我国设施农田氮污染研究和修复技术创新提供参考,从而推动土壤环境修复和粮食安全生产。

关键词：设施农田土壤氮污染修复技术

The Impact of Blood Transfusion on the Efficiency of Stem Cell Transplants

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Case Reports in Clinical Medicine 2024年第8期13卷 328-338页

作者： Amer Saud AL-Humaidan Saleh Saud Almutairi mohammed Hussain Khubrani Raffah Mahdi Bajudah waleed Mohammad Alzabidi mohammed Hafiz Almasabi Bader mohammed Saleh Alhomaid Waad Ali Alshehri Wejdan Saleh Alghamdi Raghad Abdullah Alwthinani Department of Pathology and Laboratory King Abdulaziz Medical City Ministry of National Guard Health Affairs Riyadh Saudi Arabia

Background: While blood product transfusion is essential for managing hematologic deficits in Allogenic Hematopoietic stem cell transplant (AHSCT) recipients, it has risks including infectious disease transmission, alloimmunization, and transfusion reactions. These risks have sparked an ongoing debate regarding the overall impact of transfusions on patient outcomes. Thus, this study aimed to evaluate the impact of Red Blood Cells (RBCs) and/or platelet transfusion on the infection incidence and overall survival in AHSCT patients. Methods: We performed a retrospective analysis of clinical and laboratory data of sixty adult patients with primary malignant hematological disorder who had undergone AHSCT. Participants’ data were categorized into two groups;Group 1 (low transfusion group) consisted of patients receiving 10 units. Quantitative data were expressed as mean ± SD. The t-test of significance and Chi-square (χ2) test were used, with p ≤ 0.05 considered significant. Result: A total of 60 patients’ data was included. In Group 1, out of 30 patients, 13 (43.33%) developed infections. In contrast, Group 2 had 21 (70%) out of 30 patients develop infections. Group 1 had a higher survival rate (57.8%) than Group 2 (transfusion > 10 units) (46.2%) with a chi-square value = 23.56, and p-value Conclusion: The volume of blood product transfusions has a considerable impact on patient outcomes, particularly infection and survival rates. Additional long-term prospective studies and larger randomized controlled trials are needed to strengthen the evidence for determining transfusion protocols for these patients.

关键词： Hematologic Neoplasms Hematopoietic Stem Cell Transplantation Blood Transfusion Survival Rate

Diagnostic accuracy of ePOS score in predicting DNR labeling after ICU admission:A prospective observational study(ePOS-DNR)

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Journal of Intensive Medicine 2024年第2期4卷 216-221页

作者： Omar E.Ramadan Ahmed F.Mady mohammed A.Al-Odat Ahmed N.Balshi Ahmed W.Aletreby Taisy J.Stephen Sheena R.Diolaso Jennifer Q.Gano waleed Th.Aletreby Department of Critical Care King Saud Medical CityRiyadhSaudi Arabia Anesthesia Department Faculty of MedicineAin Shams UniversityCairoEgypt Anesthesia Department Faculty of MedicineTanta UniversityTantaEgypt Faculty of Medicine Alexandria UniversityAlexandriaEgypt Nursing Department King Saud Medical CityRiyadhSaudi Arabia

Background Resuscitation can sometimes be futile and making a do-not-resuscitate(DNR)decision is in the best interest of the *** electronic poor outcome screening(ePOS)score was developed to predict 6-month poor outcomes of critically ill *** explored the diagnostic accuracy of the ePOS score in predicting DNR decisions in the intensive care unit(ICU).Methods This study was conducted at the ICU of a tertiary referral hospital in Saudi Arabia between March and May ***,we calculated ePOS scores for all eligible consecutive admissions after 48 h in the ICU and recorded the DNR *** ability of the score to predict DNR was explored using logistic ***'s ideal cut-off value was calculated using the DeLong method,and different diagnostic accuracy measures were generated with corresponding 95%confidence intervals(CIs).Results We enrolled 857 patients,125 received a DNR order and 732 did *** average ePOS score of DNR and non-DNR patients was 28.2±10.7 and 15.2±9.7,*** score,as a predictor of DNR order,had an area under receiver operator characteristic(AUROC)curve of 81.8%(95%CI:79.0 to 84.3,P17 was associated with a sensitivity of 87.2(95%CI:80.0 to 92.5,P17 may help guide clinical decisions to withhold or commence resuscitative measures.

关键词： Do-not-resuscitate(DNR) Resuscitation Intensive care unit(ICU) Diagnostic accuracy Sensitivity Specificity

Traumatic facial nerve paralysis dilemma. Decision making and the novel role of endoscope

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Journal of Otology 2022年第3期17卷 116-122页

作者： Mohamed Elkahwagi mohammed Abdelbadie Salem waleed Moneir Hassan Allam ORL-HNS Mansoura university Egypt

Objective: The management of traumatic facial nerve paralysis(FNP) has remained a controversial issue with conflicting findings arguing between surgical decompression and conservative ***, recent advances in endoscopic surgery may consolidate the management plan for this ***: This prospective clinical study included patients with posttraumatic FNP at a tertiary referral center. Patients were categorized in two main groups: surgical and conservative. Indications for surgery included patients with immediate and complete FNP, no improvement in facial function on medical treatment, with electroneurography showing >90% degeneration or electromyography showing fibrillation potential. Patients who did not satisfy this criterion received the conservative approach. The transcanal endoscopic approach(TEA) or endoscopic assisted transmastoid approach was performed for facial nerve decompression in the surgical ***: The main outcome was facial function improvement, assessed using the House Brackmann grading scale(HBGS) 6 months after surgery, and hearing state assessed using the air bone gap(ABG).Results: The study included 38 patients, of whom 15 underwent had surgical decompression and 23underwent conservative therapy. A significant improvement in facial nerve function from a mean of4.66 ± 0.97 to 1.71 ± 0.69(P = 0.001) and ABG from a median of 30(10-40) to 20(10-25)(P = 0.002)was ***: Decision-making in cases of traumatic FNP is critical. The geniculate ganglion and tympanic segment were the most commonly affected areas in FNP cases. The TEA represents the most direct and least invasive approach for this area.

关键词： Posttraumatic Facial nerve Decompression Endoscopic Transcanal Electrodiagnostic