Data mining and statistical analysis of completions in the Canadian Montney formation

This thesis documents a data-mining study and statistical analysis of well completion methods and their impact on production for more than 3300 horizontal wells in the Canadian Montney resource play. The statistical software JMP is used to analyze well and production data for both horizontal Montney gas and oil wells, examining production trends with changes in completion parameters, such as the type of completion, fluid volume pumped, proppant load, number of fracture stages and completion costs. The analysis also provides a general understanding of average treatment characteristics, and how completions have changed with time for the Montney play. Among the many results of this work, it is shown that there is a limit to adding stages to well completions in the Montney. While additional completed stages may increase cumulative recovery, the recovery per stage decreases after a point. This conclusion is consistent with recent findings (VISAGE and Jim Gouveia 2014). In addition, findings of the study clearly demonstrate that wells with the smallest frac fluid load recovery have the best cumulative recovery with time, and spending more for the completion translates into higher recovery. This work is important as it is the first field-wide statistical review of wells completed in the Montney using large up to date dataset --Abstract, page iii

Management and recycling of constructional solid waste in Turkey

AbstractControl and management of solid waste materials created during/after building/demolition and renewal of a structure is one of the most important problems of modern societies today. Solid waste materials which are differentiated depending on properties of structure and construction technique generally consist of materials such as concrete, brick, stone, briquette, wood, metal, glass, gypsum, plastic, ceramic. The matter of reuse was created as a result of limited capacity of reserves of sources and increased consumption depending on increase of population. Today it is possible reuse of various solid wastes. Consequently, evaluation of construction wastes which are used as primary aggregate source in construction industry, became very important in our world where natural sources were finished. Target of that study is examining utilization ratio of materials preferred during building process of structures by recycling at the end of utilization life for “Construction/ demolition wastes management and reuse”; control of environmental pollution, ecologic balance and economical development and discussion by providing examples from Turkey

Methylenetetrahydrofolate reductase gene (C677T and A1298C) polymorphisms and hyperhomocysteinemia as risk factors for Myocardial Infarction

Conflicting data concerning the association between methylenetetrahydrofolate reductase gene MTHFR (C677T and A1298C) polymorphisms with or without hyperhomocysteinemia and myocardial infarction exists and data from developing countries is limited thus, a current study initiated to study whether any association exist between the above polymorphisms and myocardial infarction among Kurdish patients from Duhok province/Iraq. A case-control study was performed in Azadi teaching hospital/Duhok/Iraq and included 75 patients with acute myocardial infarction and 75 age and sex-matched normal controls. All the patients and controls had their methylenetetrahydrofolate reductase gene analyzed for C677T and A1298C polymorphism using polymerase chain reaction/restriction fragment length polymorphism technique as well as their homocysteine level

Methylenetetrahydrofolate reductase gene (C677T and A1298C) polymorphisms and hyperhomocysteinemia as risk factors for Myocardial Infarction

321-324Conflicting data concerning the association between methylenetetrahydrofolate reductase gene MTHFR (C677T and A1298C) polymorphisms with or without hyperhomocysteinemia and myocardial infarction exists and data from developing countries is limited thus, a current study initiated to study whether any association exist between the above polymorphisms and myocardial infarction among Kurdish patients from Duhok province/Iraq. A case-control study was performed in Azadi teaching hospital/Duhok/Iraq and included 75 patients with acute myocardial infarction and 75 age and sex-matched normal controls. All the patients and controls had their methylenetetrahydrofolate reductase gene analyzed for C677T and A1298C polymorphism using polymerase chain reaction/restriction fragment length polymorphism technique as well as their homocysteine level

Afghanistan: A Study in Internal Conflict and National Cohesion

Conflicts are caused by various reasons. When competing groups’ goals, objectives, needs or values clash the aggression and violence is a result. Afghanistan as multi ethnic state enjoyed internal flexibility till socialist revolution (1978) that changed its social fabric due to ideological clash. In bipolar world this conflict invited the involvement of external actors (USSR & USA). Even after the withdrawal of Soviet troops this conflict sustained till 1992. The Mujahidin who had become new masters of the war torn country added fuel to the fire by converting an ideological clash into an ethnic one. Taliban replaced the Mujahidin but their religious orthodoxy also failed to bring national cohesion.The long sustained conflict has direct bearings on national and individual life of people of Afghanistan who have lost their ability to work together. All attempts made on national cohesion and integration so far have failed. People do not rely and trust each other and they have lost their motivation to work together and to rebuild their institutions and economy. It is the legacy of the long war that is still going on. A closer look at the last 35 years traumatic history of the country clearly illustrates the complexity of the problem due to clash of divergent aims and objectives of several parties

Collisional dissociation of heavy mesons in dense QCD matter

In the framework of the reaction operator approach we calculate and resum the multiple elastic scattering of a fast $q \bar{q}$ system traversing dense nuclear matter. We derive the collisional broadening of the meson's transverse momentum and the distortion of its intrinsic light cone wave function. The medium-induced dissociation probability of heavy mesons is shown to be sensitive to the opacity of the quark-gluon plasma and the time dependence of its formation and evolution. We solve the system of coupled rate equations that describe the competition between the fragmentation of $c$- and $b$-quarks and the QGP-induced dissociation of the $D$- and $B$-mesons to evaluate the quenching of heavy hadrons in nucleus-nucleus collisions. In contrast to previous results on heavy quark modification, this approach predicts suppression of $B$-mesons comparable to that of $D$-mesons at transverse momenta as low as $p_T \sim 10$ GeV. It allows for an improved description of the large attenuation of non-photonic electrons in central Au+Au reactions at RHIC.Comment: 8 pages, 5 figures. Figures and references updated, typos corrected. As published in Phys.Lett.

Performance of Different Tomato Genotypes in the Arid Tropics of Sudan during the Summer Season. I. Vegetative Growth

Selected, eleven tomato genotypes of diverse origin were grown in a glasshouse of the Humboldt University of Berlin, Germany during 2002 and under field conditions in Shambat, University of Khartoum, Sudan for two successive seasons (2002/2003, 2003/2004). High temperatures under field conditions resulted in poor stand and stunted growth of tomato plants. Highly significant differences were encountered among the different genotypes for leaf area, leaf area ratio, leaf weight ratio, stem fresh and dry weight and leaf fresh and dry weight. Based on results obtained from this study, the genotype ‘Summerset’ proved to be more tolerant under high temperature conditions in comparison to other investigated genotypes and may be useful for exploitation under arid tropical region of Sudan

Electronic and Optical Properties of 3,3´,3´´,3´´´- and 4,4´,4´´,4´´´-Tetraaminophthalocyantocopper(II) Grafted with Different Polymers

Phthalocyanines and other related compounds are an important class of macrocyclic with many commercial applications. Therefore, their electronic and optical properties of  3,3',3'',3'''-tetraaminophthalocyaninatocopper(II), and 4,4',4'',4'''-tetraaminophthalocyaninatocopper(II) compounds and their grafted polymers based on poly(ethylene glycol) with adipic acid or sebacic acid were studied. Their absorption spectra resulted from UV-Visible measurements showed the characteristic phthalocyanine peaks (Q and B bands). In general, the two bands exhibit blue shifts of both bands for polymers grafted-compounds in comparison with 3,3',3'',3'''- (NH2)4PcCu(II) and 4,4',4'',4'''-(NH2)4PcCu(II) alone. The energy gaps of tetraaminophthalocyaninatocopper(II)  compounds and with grafted polymers were calculated from optical measurements and showed an increasing in the energy gap due to grafted polymers in comparison with the ungrafted tetraaminophthalocyaninatocopper(II) and they were affected by their particle size. Keywords: electronic properties, optical properties, tetraaminophthalocyanine, grafting polymer, energy gap

Minimally invasive surgery in primary hyperparathyroidism

Aim:  To describe the general and laboratory characteristics of patients with primary hyperparathyroidism (PHPT) who underwent surgery in our clinic, as well as surgery-related morbidity. Methods: The study population were selected: Patients with clinical and radiological diagnosis of PHPT were included in the study. Minimal invasive parathyroid surgery, aimed only the affected gland, was chosen for the patients. Preoperative calcium (Ca), parathyroid hormone (PTH), and postoperative Ca and PTH levels were recorded. Preoperative sonography and scintigraphy studies to determine localization were obtained from the same database. Results: 116 patients were undergone minimal invasive surgery for hyperparathyroidism, which is mainly focused on the pathological gland. The mean preoperative PHT was 397 ng/L and postoperative PTH was 53 ng/L. Preoperative and postoperative Ca levels were 11.7 mg/dL and 9.3 mg/dL, respectively. Histopathological evaluation revealed following results: 108 patients had adenoma. None of the subjects had malignancy. The mortality rate was 0% and the morbidity was 1.7%, related to this procedure. Conclusion: According to the data in present study, we suggest that minimally invasive surgical techniques should be preferred in sake of higher success and lower postoperative morbidity in patients with a single gland disease