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Darwich I. Abuassi M. Aliyev R. Scheidt M. Alkadri M. A. Hees A. Demirel-Darwich S. Chand M. Willeke F. 《Techniques in coloproctology》2022,26(5):373-386
Techniques in Coloproctology - The notion of articulation in surgery has been largely synonymous with robotics. The ARTISENTIAL® instruments aim at bringing advanced articulation to... 相似文献
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In Lebanon and many other countries where structures are vulnerable to impact loads caused by accidental rock falls due to landslides, specifically bridges with hollow core slab, it is mandatory to develop safe and efficient design procedures to design such types of structures to withstand extreme cases of loading. The structural response of concrete members subjected to low velocity high falling weight raised the interest of researchers in the previous years. The effect of impact due to landslide falling rocks on reinforced concrete (RC) slabs has been investigated by many researchers, while very few studied the effect of impact loading on pre-stressed structures, noting that a recent study was conducted at Beirut Arab University which compared the dynamic behavior of reinforced concrete and post-tensioned slabs under impact loading from a 605 kg impactor freely dropped from a height of 20 m. Hollow core slabs are widely used in bridges and precast structures. Thus, studying their behavior due to such hazards becomes inevitable. This study focuses on these types of slabs. For a better understanding of the behavior, a full scale experimental program consists of testing a single span hollow core slab. The specimen has 6000 mm × 1200 mm × 200 mm dimensions with a 100 mm cast in a place topping slab. Successive free fall drops cases from 14 m height will be investigated on the prescribed slab having a span of 6000 m. This series of impacts will be held by hitting the single span hollow core slab at three different locations: center, edge, and near the support. The data from the testing program were used to assess the structural response in terms of experimental observations, maximum impact and inertia forces, structural damage/failure: type and pattern, acceleration response, and structural design recommendations. This research showed that the hollow core slab has a different dynamic behavior compared to the post tensioned and reinforced concrete slabs mentioned in the literature review section. 相似文献
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Anup Pamnani Megan Rosenstein Alaeldin Darwich Alexander Wolfson 《Journal of clinical anesthesia》2010,22(6):450-453
A recombinant human antithrombin (rhAT; generic name: antithrombin Alfa) has recently been developed. A 37 year-old parturient with hereditary antithrombin deficiency, receiving rhAT infusion therapy, who successfully received an epidural catheter for analgesia and anesthesia during labor and cesarean delivery, is presented. 相似文献
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Yaseen H Kamaledin K Al Umran K Al Arfaj A Darwich M Awary B 《Indian journal of pediatrics》2002,69(6):481-484
Objective: We hypothesized that among neonates with necrotizing entercolitis (NEC), important epidemiologic and outcome differences
exist between those with early-onset vs. those with late-onset NEC.Methods : We reviewed all records of neonates cared for in the King Fahad University Hospital during the past ten years who had the
diagnosis of NEC. We separated cases into two groups depending on age at diagnosis. Specifically, we termed “early-onset”
those cases diagnosed during the first seven days of life, and “late-onset” those diagnosed thereafter. We compared, in the
two groups, gestational age, clinical signs at onset, laboratory data, surgical findings, complications, and mortality.Results: From 1989 to 1999, 37 cases of stage lla (or higher) NEC were diagnosed; 25 “early-onset “ and 12 “late-onset”. Neonates
with “earlyonset” NEC were more mature (35.4 ±2.5 weeks gestation) than those with “late-onset” (27.7 ±2.8 weeks, P = 0.0001),
were more likely to have feedings begun in the first 48 hours of life (P = 0.0002), and more likely to have feeding increments
of >25 ml/kg/day (P=0.03). Neonates with “late-onset” NEC were more likely to present with vomiting (P=0.003) and apnea (P=0.001),
and were more likely to have ileal rather than colonic necrotic lesions, short bowel syndrome, and mortality (P = 0.03).Conclusion: During the past 10 years at the King Fahad University Hospital, cases of early and late-onset NEC have had distinct epidemiologic
and outcome features. Recognizing these differences may be useful in prognostication and counseling 相似文献
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Plana M Garcia F Darwich L Romeu J López A Cabrera C Massanella M Canto E Ruiz-Hernandez R Blanco J Sánchez M Gatell JM Clotet B Ruiz L Bofill M;Red de Investigación en Sida 《Immunology》2011,133(3):318-328
Infection with HIV-1 frequently results in the loss of specific cellular immune responses and an associated lack of antibodies. Recombinant growth hormone (rGH) administration reconstitutes thymic tissue and boosts the levels of peripheral T cells, so rGH therapy may be an effective adjuvant through promoting the recovery of lost cellular and T-cell-dependent humoral immune responses in immunosuppressed individuals. To test this concept, we administered rGH to a clinically defined group of HIV-1-infected subjects with defective cellular and serological immune responses to at least one of three commonly employed vaccines (hepatitis A, hepatitis B or tetanus toxoid). Of the original 278 HIV-1-infected patients entering the trial, only 20 conformed to these immunological criteria and were randomized into three groups: Group A (n = 8) receiving rGH and challenged with the same vaccine to which they were unresponsive and Groups B (n = 5) and C (n = 7) who received either rGH or vaccination alone, respectively. Of the eight subjects in Group A, five recovered CD4 cellular responses to vaccine antigen and four of these produced the corresponding antibodies. In the controls, three of the five in group B recovered cellular responses with two producing antibodies, whereas three of the seven in Group C recovered CD4 responses, with only two producing antibodies. Significantly, whereas seven of ten patients receiving rGH treatment in Group A (six patients) and B (one patient) recovered T-cell responses to HIVp24, only two of six in Group C responded similarly. In conclusion, reconstitution of the thymus in immunosuppressed adults through rGH hormone treatment restored both specific antibody and CD4 T-cell responses. 相似文献
7.
Loai Hijazi Wael Hejazi Mhd Ayham Darwich Khaldoun Darwich 《Oral and maxillofacial surgery》2016,20(4):359-367
Purpose
The purpose of the study was to evaluate the effect of clenching tasks on the stress and strain of condylar osteosynthesis screws and plates, as well as on the stress, strain distribution and displacement on the whole mandible and bone surrounding screws.Methods
Three-dimensional finite element models of the mandible, two straight four-hole plates and eight screws were established. Six static clenching tasks were simulated in this study: incisal clench (INC), intercuspal position (ICP), right unilateral molar clench (RMOL), left unilateral molar clench (LMOL), right group function (RGF) and left group function (LGF).Results
Based on the simulation of the six clenching tasks, none of the inserted screws and plates were broken or bended. For the whole mandibular bone, the maximum von Mises stress and von Mises strain observed were yielded by the ICP. For the bone surrounding the inserted screws, the maximum von Mises stress and von Mises strain were yielded by the LMOL (49.2 MPa and 3795.1 μ).Conclusion
Clenching tasks had significant effects on the stress distribution on the condylar osteosynthesis and the bone surrounding screws. Contralateral occlusion task (LMOL) had the maximal results of von Mises stress and strain and healing problems could be occur, this result confirms the importance of soft diet after surgery.8.
Ivan Díaz Joan Pujols Llilianne Ganges Mariona Gimeno Laila Darwich Mariano Domingo Enric Mateu 《Vaccine》2009,27(41):5603-5611
T-cell epitopes of porcine reproductive and respiratory syndrome virus (PRRSV) glycoproteins 4 (GP4), 5 (GP5) and nucleocapsid (N) were predicted using bioinformatics and later tested by IFN-γ ELISPOT in pigs immunized with either a modified live vaccine (MLV) or DNA (open reading frames 4, 5 or 7). For MLV-vaccinated pigs, immunodominant epitopes were found in N but T-epitopes were also found in GP4 and GP5. For DNA-immunized pigs, some peptides were differently recognized. Using a large set of PRRSV sequences it was shown that N contains a conserved epitope and that for GP5, the genotype-I counterparts of previously reported epitopes of genotype-II strains were also immunogenic. 相似文献
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