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Indentation Creep Behavior and Microstructure of Cu-Ge Ferrites

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均相和非均相催化微藻脂质提取和酯交换制备生物燃料的研究进展

Materials Sciences and Applications（材料科学与应用期刊） 2011年第8期

作者： Hesham Mohaned Zaki ali Mohamed Abdel-Daiem Yahia Ibrahim Swilem Farid El-Tantawy Fahad Masoud al-Marzouki Ahmed Abdallah al-Ghamdi Saleh al-Heniti farag said al-hazmi Talal Sadaka al-harbi

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Chinese Journal of Catalysis 2024年第4期59卷 97-117页

作者： Vinoth Kumar Ponnumsamy Hussein E.al-hazmi Sutha Shobana Jeyaprakash Dharmaraja Dipak Ashok Jadhav Rajesh Banu J Grzegorz Piechota Bartłomiej Igliński Vinod Kumar Amit Bhatnagar Kyu-Jung Chae Gopalakrishnan Kumar 高雄医科大学药物与应用化学系环境医学研究中心中国台湾高雄高雄医科大学医学研究部中国台湾高雄格但斯克理工大学土木与环境工程学院波兰纳鲁特维察格但斯克范朗大学工程与技术学院建筑绿色技术与可持续发展研究组越南胡志明市工程技术学院科学与人文系化学部印度泰米尔纳德邦韩国海洋大学海洋科学与工程学院环境工程系韩国釜山泰米尔纳德邦中央大学生命科学系印度泰米尔纳德邦 GPCHEM沼气研究与分析实验室波兰尼古拉斯哥白尼大学化学系波兰克兰菲尔德大学水与能源学院英国拉彭兰塔工业大学工程科学学院分离科学系芬兰韩国海洋大学海洋可再生能源工程专业韩国釜山延世大学土木与环境工程学院韩国首尔斯塔万格大学科学技术学院化学、生物科学与环境工程研究所挪威斯塔万格

随着化石燃料燃烧导致的二氧化碳排放不断加剧气候变化,且化石燃料储量日益减少,寻求可再生能源已成为一项紧迫的任务.其中,藻类衍生可持续燃料因具有成本优势和可运输性,在解决全球能源危机方面展现出广阔前景,备受关注.利用化学转化... 详细信息

随着化石燃料燃烧导致的二氧化碳排放不断加剧气候变化,且化石燃料储量日益减少,寻求可再生能源已成为一项紧迫的任务.其中,藻类衍生可持续燃料因具有成本优势和可运输性,在解决全球能源危机方面展现出广阔前景,备受关注.利用化学转化技术从微藻中提取脂质,并通过酯交换反应可以将其转化为脂肪酸甲酯,是生产绿色生物燃料的有效途径.这一过程涉及游离脂肪酸、磷脂和甘油三酯的提取,并且生产过程能耗低,成为满足日益增长的能源需求的一种理想解决方案.本文综述了微藻脂质提取和酯交换制备生物燃料的相关研究进展.首先,介绍了微藻脂质的提取方法,包括溶剂提取法、索氏提取法、布利格和戴耶法、超临界二氧化碳提取以及离子液体溶剂法等,并分析了各方法的优缺点.随后,重点阐述了酯交换技术在微藻脂质转化中的应用,包括酸碱催化、酶催化以及原位酯交换反应等,并探讨了这些技术的反应机理、催化剂选择、反应器设计以及生物油生产工艺等方面的研究进展.通过综述上述研究进展,为微藻脂质的生产和应用提供了理论指导.研究表明,通过优化催化剂种类、反应条件以及提取方法,可以有效提高微藻脂质的转化效率和生物油品质.同时,本文也指出了当前微藻脂质生产中面临的挑战,如微藻栽培和生长条件优化、高效转化技术的开发等.随着可持续能源日益受到重视,微藻脂质作为一种可再生能源具有巨大的发展潜力.未来研究应进一步关注微藻的规模化栽培、生长条件优化以及高效转化技术的研发,以提高微藻脂质的产量和品质.同时,应进一步推动和实现微藻生物燃料的实际应用,从而为应对气候变化和能源危机提供有效的解决方案.

关键词：微藻脂质提取酯交换催化酶催化原位技术

Factors associated with exclusive breastfeeding in relation to knowledge,attitude and practice of breastfeeding mothers in Rabigh community,Western Saudi Arabia

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World Journal of Pediatrics 2019年第6期15卷 601-609页

作者： Moustafa A.Hegazi Mousa allebdi Mohammed almohammadi Abdulelah alnafie Lama al-hazmi Shahad alyoubi Pediatric Department Faculty of Medicine in RabighKing Abdulaziz UniversityP.O.80205Jeddah 21589Saudi Arabia Pediatric Department Mansoura University Children's HospitalP.O.35516MansouraEgypt Faculty of Medicine in Rabigh King Abdulaziz UniversitySaudi Arabia

Background There is much concern about declining rates of exclusive breastfeeding(EBF)all over the world including Saudi Arabia which deprives infants from many immunological,nutritional,and psychosocial *** study was per-formed to determine EBF prevalence and factors influencing EBF in relation to knowledge,attitude and practice(KAP)of breastfeeding mothers(BFM)in Rabigh,Western Saudi *** Data about factors that could be associated with EBF and KAP of BFM were collected by cross-sectional ques-tionnaire-based study from 420 *** Prevalence of EBF for 6 months was 27.6%which is far below World Health Organization ***,socioeconomic,biomedical as well as most studied variables of KAP of 50%to over 90%of participating mothers were adequate to account for low EBF *** knowledge about benefits of colostrum and continuation of breastfeeding for 2 years was given by only 86.2%and 36.7%of BFM,*** most significant independent factors associated with EBF were perception of sufficient human milk[adjusted odds ratio(AOR)2.89;95%confidence interval(CI)1.72-4.89],absence of nipple pain(AOR 2.77;95%CI 1.72-4.45)and mothers without university education(AOR 1.86;95%CI 1.15-3.01).Early introduction of formula in hospital after birth was the main inappropriate feeding practice in 76.2%of infants of *** Findings of this study should be utilized by Rabigh community and other national or worldwide communities with similar characters to promote EBF by targeted educational programs after identification of significant factors inltuenc-ing EBF and gaps in KAP of BFM.

关键词： Exclusive breastfeeding Factors Rabigh Saudi Arabia

Spontaneous Monochorionic Triamniotic Triplet Pregnancy: A Case Report

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Open Journal of Obstetrics and Gynecology 2023年第6期13卷 1075-1080页

作者： al Hussain al hazmi Ola Tayeb Afrah al Mutairi Mufareh Asiri Maternity Hospital King Saud Medical City Riyadh KSA

Background: Monochorionic triamniotic (MCTA) triplet pregnancy is a rare entity associated with a high risk of complications. In most previously reported cases, the pregnancy was conceived with the use of assisted reproductive technologies, and these cases were associated with complications. Case Presentation: We report a 28-year-old woman with a spontaneously conceived MCTA triplet pregnancy diagnosed at the gestational age of 26 weeks. all fetuses had normal amniotic fluid and umbilical artery Doppler findings were normal. The estimated weight of fetuses was 848 g, 891 g, and 1 kg, respectively. The patient was managed conservatively with a plan to monitor fetal growth every two weeks and a Doppler study twice weekly. On the 8th day of admission, the patient developed labor pains. Per vaginal examination revealed 1 - 2 cm cervical dilatation. Cesarean section was performed, and three girls were delivered with a single placenta (birth weight: 820, 925, and 960 g, respectively). Conclusion: Monochorionic triplet pregnancy is associated with a higher risk of fetal morbidity and mortality. Therefore, awareness of its complications can facilitate better management of such cases.

关键词： Monochorionic Triamniotic Triplet Pregnancy Case Report

Retractions of One Dimensional Manifold

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Applied Mathematics 2012年第10期3卷 1135-1143页

作者： A. E. El-Ahmady Nashwa Salem Awyd al-hazmi Mathematics Department Faculty of Science Taibah University Madinah Saudi Arabia

Our aim in the present article is to introduce and study types of retraction of one dimensional manifold. New types of geodesics in one dimensional manifold are presented. The deformation retracts of one dimensional manifold into itself and onto geodesics is deduced. also, the isometric and topological folding in each case and the relation between the deformations retracts after and before folding has been obtained. New types of conditional folding are described.

关键词： Retractions Deformation Retracts Folding One Dimensional Manifold

Exploring Oral Health Care Awareness among Intensive Care Units Nurses at KAUH

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Open Journal of Stomatology 2017年第11期7卷 488-493页

作者： Jamilah S. Jastaniah Rawan A. almarhoumi Nadia A. al-hazmi Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia Department of Orthodontics Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia Oral Biology Department Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia

The relationship between oral health status and systemic diseases is well established, however, literature shows that there is still lack of awareness among individuals taking care of ICU patients. This work aims to explore if ICU nurses are aware of the relationship between oral health status and systemic diseases, whether they practice oral health care on their patients and if they do, what methods they use. A pre-validated questionnaire was used and distributed to all nurses practicing at KAUH Medical and Surgical ICU. all surveys were voluntary and anonymous. A total of 45 of questionnaires were distributed to ICU nurses with a response rate of 95.6% (Tn = 43). Mean responses indicated that nurses recognize that micro-aspiration of contaminated oropharyngeal secretions is the most likely mechanism of transmission of bacteria into the lung of ventilated patients (mean = 5.6). Accordingly, our results also showed that oral care was perceived as a very high priority for mechanically ventilated patients by 95% of nurses. Mouthwash was the primary material used for oral care by the majority of nurses (n = 32;74.4%), and chlorhexidine the most used one (n = 42;98%). The use of manual toothbrushes was very low (n = 8;23.5%) and not surprisingly, none of the nurses used electric toothbrushes to provide oral care for their ventilated patients. Finally, 86% of the respondents agreed on the need of better supplies and equipment to be provided by the hospital in order to perform better oral care in the ICU. Oral care provided in the ICU is not concordant with the global oral care protocols. Thus, the need for translation of oral care guidelines into clinical practice is of serious importance to improve the quality of care.

关键词： Oral Health Oral Hygiene Nurses ICU

Optimization of culture conditions for short-term maintenance, proliferation, and colony formation of porcine gonocytes

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Journal of Animal Science and Biotechnology 2018年第2期9卷 326-338页

作者： Awang hazmi Awang-Junaidi ali Honaramooz Department of Veterinary Biomedical Sciences Western College of Veterinary Medicine University of Saskatchewan

Background: Gonocytes give rise to spermatogonial stem cells, and thereby play an essential role in establishing spermatogenesis. Optimized culture conditions for gonocytes provide an opportunity for their study and in vitro manipulation for potential application in reproductive technologies. Using six experiments in a step-wise design, we examined the effects of several culture conditions on the maintenance, proliferation, and colony formation of porcine gonocytes. Testis cells from neonatal piglets were cultured for 7 d in DMEM supplemented with 10% fetal bovine serum. The examined culture conditions included using different cell seeding densities, gonocyte proportions, incubation temperatures, sampling strategies, and medium changing ***: Confluency of cel s was optimal(>90% by ~6 d) when 3.0 × 104 testis cel s/cm2 containing ~40% gonocytes were used. Incubating the cel s at 35 °C or 37 °C resulted in similar cel number and viability at confluency, but incubation at 35 °C resulted in a delayed confluency. In the first 2 d of culture, gonocytes remained mostly floating in the medium and gradual y settled over the next 5 d. Consequently, not changing the medium for 7 d(as opposed to changing it every 2 d) led to a significant increase in the number of gonocyte colonies by reducing the loss of "floating gonocytes".Conclusion: We found that gonocytes require the presence of a critical minimum number of somatic cel s for settlement, and can proliferate and form growing colonies even in a basic medium. Large numbers of viable gonocytes remain floating in the medium for several days. The optimized culture conditions in the present study included seeding with 3.0 × 104 testis cel s/cm2 containing ~40% gonocytes, incubating at 37 °C, and without changing the medium in the first week, which can result in improved colony formation of porcine gonocytes.

关键词： Cell culture Male Germline stem cells Pigs Testis

沙特阿拉伯暴发的Rift山谷热的眼部并发症

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世界核心医学期刊文摘（眼科学分册） 2005年第7期1卷 42-43页

作者： al- hazmi A. al- Rajhi A.A. Abboud E.B. 邢咏新 PO Box 902 Jizan Saudi Arabia

Objective: To report ocular complications of Rift Valley fever (RVF) during its first reported outbreak in southwest Saudi Arabia in autumn 2000. Design: Cross- sectional study of patients in a referral hospital. Participants: One hundred forty- three consecutive patients with confirmed RVF serologic test results and ocular lesions were enrolled in the study. Methods: Hospitalized patients (n=30) and outpatients (n=113) with clinical symptoms consistent with RVF, positive RVF serologic test results, and ocular abnormalities were studied. Ophthalmologic examinations, including fundus photography and fluorescein angiography, were performed. Patients were followed up at regular intervals to determine the prognosis and outcome of identified ocular abnormalities. Main Outcome Measures: Visual acuity at initial presentation and course of anterior and posterior segment complications. Results: Among 143 patients (78% males; mean age,53.2 years), 212 eyes were affected, comprising 47 eyes in 30 inpatients and 165 eyes in 113 outpatients. The mean interval between the onset of RVF and visual symptoms ranged from4 to 15 days (mean, 8.8 days). Macular or paramacular retinitis was identified in all the affected eyes (n=212) at the time of initial assessment. Lesions included retinal hemorrhages (40% ), vitreous reactions (26% ), optic disc edema (15% ), and retinal vasculitis (7% ). Anterior uveitis was present in 31% of outpatients. Fluorescein angiography of the retinitis showed early hypofluorescence with late staining of retinal lesions and blood vessels. Initial visual acuity was less than 20/200 in 80% of eyes in the outpatient group; their vision improved, deteriorated, or remained the same in 13% , 15% , or 72% , respectively. Evaluation at the last follow- up showed macular (60% ) or paramacular (9% ) scarring, vascular occlusion (23% ), and optic atrophy (20% ) in the outpatient group. Conclusions: Rift Valley fever was associated with major ocular morbidity. Ocular ma

关键词：眼部并发症 Rift 眼底照相荧光造影视网膜血管炎视网膜出血血管阻塞眼部病变视网膜病视盘水肿

Spontaneous Monochorionic Triamniotic Triplet Pregnancy: A Case Report

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