LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 464

Search options

  1. Article ; Online: Investigation of the acoustic emission and fractal characteristics of coal with varying water contents during uniaxial compression failure.

    Ali, Muhammad / Wang, Enyuan / Li, Zhonghui / Khan, Naseer Muhammad / Sabri Sabri, Mohanad Muayad / Ullah, Barkat

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 2238

    Abstract: To investigate the effect of water on the mechanical properties and acoustic emission (AE) characteristics of coal in the failure and deformation processes. Coal samples of different content were subjected to uniaxial compression tests and AE signals ... ...

    Abstract To investigate the effect of water on the mechanical properties and acoustic emission (AE) characteristics of coal in the failure and deformation processes. Coal samples of different content were subjected to uniaxial compression tests and AE signals were monitored. The characteristics of the AE signals were further analyzed using fractal analysis. The results show that saturated coal samples have substantially reduced mechanical properties such as uniaxial compressive strength (UCS), dissipation energy, peak stress, and elastic modulus. Under loading, stress-strain curves are characterized by five distinct stages: (1) compaction; (2) linear elastic; (3) crack stable propagation; (4) crack accelerating propagation; and (5) post-peak and residual stages. Using phase-space theory, a novel Grassberger Procaccia (GP) algorithm was utilized to find the AE fractal characteristics of coal samples in different stages. It is significant to note that AE energy does not exhibit fractal characteristics in either the first or second stages. Contrary to the first two stages, the third stage showed obvious fractal characteristics. Fractal analysis of AE time sequences indicates that fractal dimension values change as stress increases, indicating the initiation of complex microcracks in coal. In the fourth stage, the fractal dimension rapidly declines as the strength reaches its limit, indicating the occurrence of macrocracks. However, fractal dimensions continued to decrease further or increased slightly in the fifth stage. Consequently, the coal begins to collapse, potentially resulting in a disaster and failure. It is, therefore, possible to accurately predict coal and rock dynamic failures and microcrack mechanisms by observing the subsequent sudden drop in the correlation dimension of the AE signals in response to different stages of loading.
    Language English
    Publishing date 2023-02-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-29473-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: False Elevation of Troponin Levels in a Patient With Chest Pain and Significant Psychoemotional Stress.

    Elkhedr, Ali / Elkhidir, Sabri

    Cureus

    2023  Volume 15, Issue 10, Page(s) e47223

    Abstract: We present a case of a 63-year-old woman who experienced significant psychoemotional stress and was seen in the emergency department for an evaluation of chest pain. She was sent home after reassurance. Subsequent troponin levels came back above the ... ...

    Abstract We present a case of a 63-year-old woman who experienced significant psychoemotional stress and was seen in the emergency department for an evaluation of chest pain. She was sent home after reassurance. Subsequent troponin levels came back above the normal range. The patient was called back to the hospital for further assessment, including a potential workup for the exclusion of acute coronary syndrome, given the existing risk factors, symptoms, and elevated cardiac enzymes. The patient has risk factors for atherosclerosis, including hypercholesterolemia, hypertension, and age. She has recently gone through hard personal, emotional, and psychosocial stress. She presented with atypical chest pain, subjective sense of breathlessness, and anxiety. She was reassured, had blood tests ordered, and was discharged after relative improvement. Later that day, her blood test results, which were taken earlier, showed elevated troponin levels. Therefore, she was asked to come back for a cardiology assessment and underwent coronary angiography, which showed normal patent coronary arteries. This case report highlights a patient with a non-cardiac elevation of troponin, emphasizing the importance of considering non-cardiac causes when interpreting elevated troponin levels. The objective of this report is to raise awareness among healthcare professionals regarding the potential causes of false troponin elevation and promote a comprehensive diagnostic approach to minimize unnecessary interventions.
    Language English
    Publishing date 2023-10-17
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.47223
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Cost-Effectiveness of the Pharmacist-Managed Warfarin Therapy vs. Standard Care for Patients With Mechanical Mitral Valve Prostheses: An Egyptian Healthcare Perspective.

    Batran, Radwa Ahmed / Sabri, Nagwa Ali / Ali, Ihab / Fahmy, Sarah Farid

    Frontiers in cardiovascular medicine

    2022  Volume 9, Page(s) 889197

    Abstract: Background: Despite warfarin therapy had been used for decades for patients with mechanical mitral valve prostheses (MMVPs), serious and life-threatening complications are still reported worldwide with a significant economic burden. This study is aimed ... ...

    Abstract Background: Despite warfarin therapy had been used for decades for patients with mechanical mitral valve prostheses (MMVPs), serious and life-threatening complications are still reported worldwide with a significant economic burden. This study is aimed at assessing the clinical and the cost-effectiveness of adopting pharmacist-managed warfarin therapy (PMWT) services for optimizing warfarin treatment in Egypt.
    Methods: A prospective randomized trial in which 59 patients with MMVPs were randomly assigned to receive the PMWT services or the standard care and followed up for 1 year. The primary outcome was percentage time in the therapeutic range (TTR). For the cost-effectiveness analysis, a Markov cohort process model with nine mutually exclusive health states was developed from a medical provider's perspective. A lifetime horizon was applied. All costs and outcomes were discounted at 3.5% annually.
    Results: The study results revealed a significantly higher median TTR in the intervention group as compared to the control group; 96.8% [interquartile range (IQR) 77.9-100%] vs. 73.1% (52.7-95.1%), respectively,
    Conclusion: The PMWT strategy was proven to provide a significantly better anticoagulation control and to be a cost-saving approach in Egyptian patients with MMVPs. Nevertheless, the dominance of this strategy is sustained by maintaining the therapeutic International Normalized Ratio (INR) control within the recommended range. Our findings will benefit Egyptian policy-makers who may seek novel health strategies for better resource allocation.
    Clinical trial registration: [ClinicalTrials.gov], identifier [NCT04409613].
    Language English
    Publishing date 2022-07-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2781496-8
    ISSN 2297-055X
    ISSN 2297-055X
    DOI 10.3389/fcvm.2022.889197
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: The Effects of Political Parties on Women's Organization

    Dilshad SABRI ALI

    Prizren Social Science Journal, Vol 4, Iss

    2020  Volume 1

    Abstract: The aim of this research is to analyze statistics to understand the effect of political parties on women organizations and the obstacles they create for these organizations as they work for gaining their members’ rights. In the research, the ... ...

    Abstract The aim of this research is to analyze statistics to understand the effect of political parties on women organizations and the obstacles they create for these organizations as they work for gaining their members’ rights. In the research, the quantitative method was used for collecting data, using a questioner. The research participants were chosen through snowball sampling in Erbil Governorate. The size of the sampling was 195 persons that their level of education was different. For analyzing the collected data SPSS software was used. The findings show that politics to a very low extent were obstacles for women’s organization and thus these organizations were unable to effectively operate in obtaining their members’ rights. The results also show that women themselves were unable to play an effective role for gaining their rights. In addition, the findings show that not having their own sources of finance makes women’s organizations depend on political parties. Key words: Women’s Organizations, Political Parties, Radical Feminist, Liberal Feminist.
    Keywords Women’s Organizations ; Political Parties ; Radical Feminist ; Liberal Feminist ; Social sciences (General) ; H1-99
    Subject code 320
    Language English
    Publishing date 2020-04-01T00:00:00Z
    Publisher Association of Scientists and Intellectuals of Kosovo
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article ; Online: Isolation of

    Miri Mizher Al Muhana, B / Ali, S A / Sabri Jabbar, A

    Archives of Razi Institute

    2023  Volume 78, Issue 1, Page(s) 397–403

    Abstract: Pseudomonas ... ...

    Abstract Pseudomonas aeruginosa
    MeSH term(s) Humans ; Anti-Bacterial Agents/pharmacology ; Coinfection/epidemiology ; COVID-19 ; Phylogeny ; Pseudomonas aeruginosa/genetics ; Pseudomonas aeruginosa/isolation & purification ; SARS-CoV-2 ; Pseudomonas Infections
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2023-02-28
    Publishing country Iran
    Document type Journal Article
    ZDB-ID 2555498-0
    ISSN 2008-9872 ; 0365-3439
    ISSN (online) 2008-9872
    ISSN 0365-3439
    DOI 10.22092/ARI.2022.359035.2360
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: The Preparation and Evaluation of Cyanocobalamin Mucoadhesive Sublingual Tablets.

    Ma'ali, Anwar / Naseef, Hani / Qurt, Moammal / Abukhalil, Abdallah Damin / Rabba, Abdullah K / Sabri, Israr

    Pharmaceuticals (Basel, Switzerland)

    2023  Volume 16, Issue 10

    Abstract: Cobalamin (vitamin ... ...

    Abstract Cobalamin (vitamin B
    Language English
    Publishing date 2023-10-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2193542-7
    ISSN 1424-8247
    ISSN 1424-8247
    DOI 10.3390/ph16101412
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Features of the rare pathogen

    Lim, Si Jie / Muhd Noor, Noor Dina / Sabri, Suriana / Mohamad Ali, Mohd Shukuri / Salleh, Abu Bakar / Oslan, Siti Nurbaya

    Journal of biomolecular structure & dynamics

    2024  , Page(s) 1–21

    Abstract: Meyerozyma ... ...

    Abstract Meyerozyma guilliermondii
    Language English
    Publishing date 2024-01-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2023.2300757
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Evaluation of single and multiple hyaluronic acid injections at different concentrations with high molecular weight in the treatment of knee osteoarthritis.

    Safali, Selim / Ertaş, Erkan Sabri / Özdemir, Ali / Cataklı, Deniz

    BMC musculoskeletal disorders

    2024  Volume 25, Issue 1, Page(s) 164

    Abstract: Background: Knee osteoarthritis is severe progressive and most commonly diagnosed articular disease and its incidence is increasing around the world depending on age. This pathologic condition which limits daily activity of patients can be characterized ...

    Abstract Background: Knee osteoarthritis is severe progressive and most commonly diagnosed articular disease and its incidence is increasing around the world depending on age. This pathologic condition which limits daily activity of patients can be characterized by degeneration of cartilage and inflammation. Although non-steroidal anti-inflammatory (NSAII) agents and other analgesics are routinely used treatment options, the potential effects of intraarticular injections including hyaluronic acid (HA) have also been demonstrated by various studies. However, few studies compare the efficacy of a single high molecular weight (HMW) high dose and a triple HMW low dose. This study aimed to compare the efficacy of single high molecular weight (HMW) high dose (2 mL / 60 mg) and triple HMW low dose (2 mL /30 mg) intra-articular injection of HA in knee osteoarthritis (OA) patients by evaluating function and pain parameters during 12 months.
    Methods: This is a single-center, retrospective clinical study that included and involved 128 patients. Group I (n=64) patients received triple 30 mg HA injections (SEMICAL®) with one-week intervals, while Group II (n=64) patients received a single 60 mg HA injection (SEMICAL®). Lequesne Index, WOMAC and VAS scores were recorded to assess pain and function during a 12-month period.
    Results: There was no significant difference in characteristics of patient demographics. Our finding indicate that WOMAC, VAS score, and Lequesne Index values during follow-up visits exhibited a decrease, signifying improvement in the clinical condition. Notably, scores were significantly more favorable with the 30 mg of HA injection compared to the 60 mg of HA injection.
    Conclusion: This study suggests that the triple low-dose injection of HMW HA is more effective in improving WOMAC, VAS scores and Lequesne Index values than a single high-dose injection.
    MeSH term(s) Humans ; Hyaluronic Acid ; Osteoarthritis, Knee/therapy ; Viscosupplements ; Molecular Weight ; Retrospective Studies ; Treatment Outcome ; Pain/drug therapy ; Injections, Intra-Articular ; Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
    Chemical Substances Hyaluronic Acid (9004-61-9) ; Viscosupplements ; Anti-Inflammatory Agents, Non-Steroidal
    Language English
    Publishing date 2024-02-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041355-5
    ISSN 1471-2474 ; 1471-2474
    ISSN (online) 1471-2474
    ISSN 1471-2474
    DOI 10.1186/s12891-024-07200-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: COVID-Net CT-2: Enhanced Deep Neural Networks for Detection of COVID-19 From Chest CT Images Through Bigger, More Diverse Learning.

    Gunraj, Hayden / Sabri, Ali / Koff, David / Wong, Alexander

    Frontiers in medicine

    2022  Volume 8, Page(s) 729287

    Abstract: The COVID-19 pandemic continues to rage on, with multiple waves causing substantial harm to health and economies around the world. Motivated by the use of computed tomography (CT) imaging at clinical institutes around the world as an effective ... ...

    Abstract The COVID-19 pandemic continues to rage on, with multiple waves causing substantial harm to health and economies around the world. Motivated by the use of computed tomography (CT) imaging at clinical institutes around the world as an effective complementary screening method to RT-PCR testing, we introduced COVID-Net CT, a deep neural network tailored for detection of COVID-19 cases from chest CT images, along with a large curated benchmark dataset comprising 1,489 patient cases as part of the open-source COVID-Net initiative. However, one potential limiting factor is restricted data quantity and diversity given the single nation patient cohort used in the study. To address this limitation, in this study we introduce enhanced deep neural networks for COVID-19 detection from chest CT images which are trained using a large, diverse, multinational patient cohort. We accomplish this through the introduction of two new CT benchmark datasets, the largest of which comprises a multinational cohort of 4,501 patients from at least 16 countries. To the best of our knowledge, this represents the largest, most diverse multinational cohort for COVID-19 CT images in open-access form. Additionally, we introduce a novel lightweight neural network architecture called COVID-Net CT S, which is significantly smaller and faster than the previously introduced COVID-Net CT architecture. We leverage explainability to investigate the decision-making behavior of the trained models and ensure that decisions are based on relevant indicators, with the results for select cases reviewed and reported on by two board-certified radiologists with over 10 and 30 years of experience, respectively. The best-performing deep neural network in this study achieved accuracy, COVID-19 sensitivity, positive predictive value, specificity, and negative predictive value of 99.0%/99.1%/98.0%/99.4%/99.7%, respectively. Moreover, explainability-driven performance validation shows consistency with radiologist interpretation by leveraging correct, clinically relevant critical factors. The results are promising and suggest the strong potential of deep neural networks as an effective tool for computer-aided COVID-19 assessment. While not a production-ready solution, we hope the open-source, open-access release of COVID-Net CT-2 and the associated benchmark datasets will continue to enable researchers, clinicians, and citizen data scientists alike to build upon them.
    Language English
    Publishing date 2022-03-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2775999-4
    ISSN 2296-858X
    ISSN 2296-858X
    DOI 10.3389/fmed.2021.729287
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Frequency of cervical premalignant lesions in the gynecologic patients of a tertiary hospital in Mogadishu, Somalia.

    Kurtay, Sabri / Ali, Khadija Yusuf / Hussein, Ahmed Issak

    BMC women's health

    2022  Volume 22, Issue 1, Page(s) 501

    Abstract: Background: Cervical cancer is the fourth most common cancer worldwide and is the most frequently diagnosed cancer in 23 countries and the most common cause of death in 36 countries, mostly from Sub-Saharan African countries. Cervical screening is a key ...

    Abstract Background: Cervical cancer is the fourth most common cancer worldwide and is the most frequently diagnosed cancer in 23 countries and the most common cause of death in 36 countries, mostly from Sub-Saharan African countries. Cervical screening is a key element to reduce the incidence and mortality of cervical cancer. Cancer screening is low in Sub-Saharan Africa. This study aims to provide information about cervical premalignant lesions frequency in Somalia.
    Methods: The pathology results of cervicovaginal smear samples obtained from patients aged 25-65 years who applied to the gynecology outpatient clinic between October 5 and December 5, 2021 were analyzed retrospectively. SPSS 22.0 was used for the statistical analysis of the data.
    Result: Among the 497 results, 63 premalignant lesions were detected. The rate of premalignant lesions (63/497) was found to be 12.3%. The most common premalignant lesion was atypical squamous cells of undetermined significance (ASC-US).
    Conclusion: In this study, the frequency of cervical premalignant lesions in Somalia was found to be higher than in the literature. Vaccination, screening, and early diagnosis are the most important components in the fight against cervical cancer. Access to vaccination, screening, and early diagnosis, which are the most important components in the fight against cervical cancer in Somalia, will be possible with the cooperation of the national health system and international organizations.
    MeSH term(s) Humans ; Female ; Uterine Cervical Neoplasms/diagnosis ; Uterine Cervical Neoplasms/epidemiology ; Tertiary Care Centers ; Early Detection of Cancer ; Retrospective Studies ; Somalia/epidemiology
    Language English
    Publishing date 2022-12-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2050444-5
    ISSN 1472-6874 ; 1472-6874
    ISSN (online) 1472-6874
    ISSN 1472-6874
    DOI 10.1186/s12905-022-02106-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top