1,687 research outputs found

    Cold-fission yields at effective excitation energies

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    The experimental cold-fission yields for the system 233U(nth, f) are analyzed as function of the effective total excitation energy (TXE). The nuclear level density effect is taken into account at higher TXE, in order to benefit by the lower experimental data uncertainty as well as to avoid the quantitative account of the level densities close to fragment ground states. In this way the odd-even staggering which appears in the yields extrapolated at zero excitation energy by using the level densities, vanishes. We conclude that the cold nuclear fragmentation theory including the dynamical model describes well the experimental data

    Be fruitful and multiply : developing an intentional, missional, and reproducible discipleship model for the Pentecostal churches in Romania

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    https://place.asburyseminary.edu/ecommonsatsdissertations/2563/thumbnail.jp

    Ischemic Ulcer Healing: Does Appropriate Flow Reconstruction Stand for All That We Need?

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    During the recent decades, soaring progresses in vascular disease knowledge, particularly in critical limb ischemia (CLI) treatment, enhanced novel diagnostic and interventional strategies with high serviceableness in patient’s selection, arterial recanalization, and dedicated ischemic ulcer follow-up. However, despite undeniable advances in medical technology and clinical judgment, limb salvage, the ambulation recovery, and patient’s survival seem only scarcely affected in this heterogeneous CLI group, particularly concerning the diabetic and renal patients. Innovative strategies such as “end artery occlusive disease” treatment or “wound-targeted revascularization” were equally proposed by following the angiosomal anatomical distribution associating individual foot collateral assessment in a unified macro- and micro-circulatory judgment. However, despite encouraging clinical results, prospective evidence still lacks on this concern. It also appears that specific wounds could not always stand for the lowest perfusion areas according to current CLI criteria, since severe neuropathy, inflammatory swelling, local infection, and skin trauma may add complementary hindrances to tissue viability

    Particularities in surgical treatment of patients with cancer of the head of pancreas and large duodenal papilla

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    Department of Surgery Nr. 2, USMF „Nicolae Testemițanu”, Congresul consacrat aniversării a 75-a de la fondarea Universității de Stat de Medicină și Farmacie „Nicolae Testemițanu” din Republica Moldova, Ziua internațională a științei pentru pace și dezvoltarePurpose: Determining the particularities of surgical treatment of patients with cancer of the head of pancreas and large duodenal papilla. Introduction: The pancreatic neoplasm is on the fourth place among the mortality due to neoplastic diseases, and after localization in 43% it is at the level of the pancreatic head. The diagnosis of pancreatic cancer is often established late, and surgical excision of the tumor is the radical treatment. Material and methods: The study included 45 patients were treated in 2019-2020 in RCH, of which 57,7%- men and 42,3%- women. Abdominal echo - at 55,81% was hypoechoic mass with dilated bile ducts upstream, at 44,18% - diffuse changes in the liver and pancreas and at 4,65% - hypoechoic mass in the pancreas head without dilation of the bile ducts. The presence of the tumor was confirmed on abdominal CT (Fig.1). Results: Radical surgical treatment was performed in 24,4%, but in 4,44% was determined venous vascular invasion (in 2,2% diagnosed by CT angiography and in 2,2% - intraoperatory). Radical interventions were performed by cephalic duodenopancreatectomy (Whipple procedure - 20% and Child procedure- 4,44%) (Fig.2,3,4). In 4,44% vascular resection was performed due to vascular invasion of the tumor in the portal vein. Palliative surgical treatment benefited 75,5% of the general study group, of which 42,2% underwent internal bilio-digestive bypass, 24,4% underwent endoscopic stenting of the biliary tract (Fig.5,6) and 8,88% performed external bilio-digestive bypass. Conclusions: In patients with cancer of the head of pancreas and large duodenal papilla, surgical treatment can have a radical curative, but also palliative aspect that leads to increased life expectancy and improved quality of life in these patients

    Acute lithiasis cholecystitis; particularities of diagnosis and treatment in the elderly

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    Objectives. The incidence of acute cholecystitis increases with age, when patients usually associate additional comorbidities. Such comorbidities and the late presentation to the doctor make the treatment more complex, associating higher rates of complications. The present study aims to evaluate the methods of diagnosis and treatment applied to a group of older patients with acute cholecystitis. Materials and Methods. 585 patients were enrolled in the study between 2019 and 2023. The inclusion criteria in the study were represented by the presence of the diagnosis of acute cholecystitis in patients over 65 years of age, while patients who presented complex locoregional pathologies (trauma, cancer, etc.) were excluded. Results. In about 91% of cases, acute cholecystitis was determined by gallstones. 61.19% of cases benefited from laparoscopic cholecystectomy, the rest of the patients requiring additional procedures or open surgery. Morbidity and mortality were not significantly influenced, but some of the patients required complex interventions and longer hospital stay. Conclusions. The clinical manifestations of acute cholecystitis can be diminished in some of the elderly patients (neurological disorders, diabetes, immunosenescence, etc.), being initially appreciated as mild forms. Later it is found (by imaging or intraoperatively) that these are much more severe forms, which often require a customized therapeutic approach

    Spontaneous rupture of a splenic artery aneurysm with hemoperitoneum; case presentation

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    Aneurysms of the splenic artery are relatively rare, being found in patients with portal hypertension, multiparous, atherosclerosis, or in young people with various genetic diseases. In the uncomplicated forms, splenic artery aneurysms are often difficult to diagnose either because of the asymptomatic evolution, or because of the non-specific symptoms. In cases of trauma or large sizes, aneurysms can be complicated by rupture, which can cause hemoperitoneum with the risk of death if specific treatment is not initiated as soon as possible. Depending on the location of the splenic aneurysm, comorbidities, the patient\u27s general condition or life-threatening complications, laparotomy, laparoscopy, endovascular techniques or combined procedures can be performed. The case of a 33-year-old female patient who presented to the emergency room with abdominal pain, nausea, vomiting and later syncope is presented. The patient was referred to the radiology department, and computed tomography revealed a ruptured splenic artery aneurysm with hemoperitoneum. The splenic artery aneurysm and the spleen were excised by emergency surgery, with a favorable postoperative outcome. The young age of diagnosis and treatment probably implies a genetic component, so that she was referred for additional investigations after discharge

    APPLE AND APPLE POMACE CHEMICAL COMPOSITIONS - A REVIEW

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    The apple tree is one of the most important tree species in the world. This fruit tree has as its origin Oriental Asia and is also mentioned in ancient writings. Due to the ecological plasticity of the apple, the conditions of vegetation, is very widespread in the world, occupies the third place after the cultivation of bananas and oranges. Apples unsuitable for preservation or for superior harvesting are processed to obtain juices in the industrial system, resulting in very many residues. The apple powder is a natural product obtained by drying the apple residue that result's from the production of apple juice process. The powder obtained from the apple residue is an important source of fiber, vitamins, antioxidants, minerals, which bring many benefits to the body

    Intraspecific Differences Regarding Granular Polymorphism in Granular Ducts’ Cells in Rats’ Mandibular Gland

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    Mandibular gland ducts’ system in rodents consist of intralobular ducts (intercalated, granular, striated) and interlobular one (main excretory duct). Granular ducts are located between intercalated and striated ducts, being present only in mandibular gland of the mouse, rat, hamster and gerbil. The biological material used for this study was represented by two strains from the same species, three Wistar rats and three Brown Norway rats. After the animals were euthanized, the mandibular glands were harvested and then processed for histological investigations. The tissue fragments were sectioned at 5μm thickness and then stained the sections using Tricrom-Goldners method. Our results emphasize that the granular ducts are well developed; regarding the shape, they are convoluted in both Wistar and Brown Norway rats, without any significant differences between the two strains. In Wistar rat, the granules in granular ducts cells are small to medium in size, with discrete polymorphism. In Brown Norway rat, the cytoplasm is loaded with granules as in Wistar rat, but these are several times larger and more polymorphic

    Dielectric silicone elastomers with mixed ceramic nanoparticles

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    A ceramic material consisting in a zirconium dioxide-lead zirconate mixture has been obtained by precipitation method, its composition being proved by wide angle X-ray powder diffraction and energy-dispersive X-ray spectroscopy. The average diameter of the ceramic particles ranged between 50 and 100 nm, as revealed by transmission electron microscopy images. These were surface treated and used as filler for a high molecular mass polydimethylsiloxane-α,ω-diol (Mn = 450,000) prepared in laboratory, the resulted composites being further processed as films and crosslinked. A condensation procedure, unusual for polydimethylsiloxane having such high molecular mass, with a trifunctional silane was approached for the crosslinking. The effect of filler content on electrical and mechanical properties of the resulted materials was studied and it was found that the dielectric permittivity of nanocomposites increased in line with the concentration of ceramic nanoparticles

    Cognitive Identity Management: Synthetic Data, Risk and Trust

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    Synthetic, or artificial data is used in security applications such as protection of sensitive information, prediction of rare events, and training neural networks. Risk and trust are assessed specifically for a given kind of synthetic data and particular application. In this paper, we consider a more complicated scenario, – biometric-enabled cognitive cognitive biometric-enabled identity management, in which multiple kinds of synthetic data are used in addition to authentic data. For example, authentic biometric traits can be used to train the intelligent tools to identify humans, while synthetic, algorithmically generated data can be used to expand the training set or to model extreme situations. This paper is dedicated to understanding the potential impact of synthetic data on the cognitive checkpoint performance, and risk and trust prediction
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