Готові списки джерел за темами / 519.7/2

Добірка наукової літератури з теми "519.7/2"

Автор: Grafiati

Опубліковано: 27 липня 2024

Оновлено: 28 липня 2024

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Статті в журналах
Дисертації
Книги

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "519.7/2".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "519.7/2"

John, J., and M. S. Malchijah Raj. "Graphs with large Steiner number." Ukrains’kyi Matematychnyi Zhurnal 76, no. 5 (June 2, 2024): 719–27. http://dx.doi.org/10.3842/umzh.v76i5.7409.

Повний текст джерела

Анотація:

UDC 519.1 In 2002, Gary Chartrand and Ping Zhang [<em>The Steiner number of a graph,</em> Discrete Math., <strong>242</strong>, 41--54 (2002)] characterized the connected graphs G of order p ≥ 3 with Steiner number p , p - 1 , or 2. In our paper, we characterize all connected graphs G of order p ≥ 4 with Steiner number s ( G ) = p - 2 . In addition, we obtain some sharp Nordhaus–Gaddum bounds for the Steiner number of connected graphs whose complement is also connected.

Стилі APA, Harvard, Vancouver, ISO та ін.

Makarov, V. L., N. V. Mayko та V. L. Ryabichev. "Реалізація точних триточкових різницевих схем для системи звичайних диференціальних рівнянь 2-го порядку". Ukrains’kyi Matematychnyi Zhurnal 75, № 1 (5 лютого 2023): 72–95. http://dx.doi.org/10.37863/umzh.v75i1.7373.

Повний текст джерела

Анотація:

УДК 517.9 + 519.6 Досліджено точну триточкову різницеву схему (ТТРС) для системи звичайних диференціальних рівнянь 2-го порядку з крайовими умовами першого роду. Знайдено послаблені умови (порівняно з відомими), за яких можливе перетворення ТТРС до однорідного дивергентного вигляду. Доведено теореми про коефіцієнтну стійкість і точність. Показано, що коефіцієнти ТТРС можна подати через розв'язки чотирьох задач Коші на проміжках довжини кроку сіт\-ки. Розв'язки цих задач можна одержати за допомогою будь-якого однокрокового методу, що приводить до усіченої різницевої схеми відповідного рангу.

Стилі APA, Harvard, Vancouver, ISO та ін.

Rahman, Md Mahfuzur, and Md Abid Hasan. "Screening of carrot lines for quality roots and higher yield for commercial cultivation." Research in Agriculture Livestock and Fisheries 2, no. 1 (April 27, 2015): 75–77. http://dx.doi.org/10.3329/ralf.v2i1.23031.

Повний текст джерела

Анотація:

The experiment was conducted at Research and Development (R&D) farm of Ispahani Agro LTD., Rangpur in order to screen suitable carrot lines for commercial cultivation in Bangladesh. Two hybrid lines (02001 and 02002) and four open pollinated lines (01001, 01002, 01003 and 01004) were used in this screening program. The experiment was carried out following randomized complete block design with three replications. Results showed that root length and diameter of line 01004 were 14.66 and 3.580 cm, respectively. The standard weight of 5 roots was 519.3 g. Moreover, the line 01004 showed maximum quality roots and yield as compared to any other lines. This line is therefore can be recommended for commercial cultivation in Bangladesh.Res. Agric., Livest. Fish.2(1): 75-77, April 2015

Стилі APA, Harvard, Vancouver, ISO та ін.

Zulkurnai, N. Z., U. F. Md. Ali, N. Ibrahim, and N. S. Abdul Manan. "Carbon Dioxide Capture by Deep Eutectic Solvent Impregnated Sea Mango Activated Carbon." E3S Web of Conferences 34 (2018): 02030. http://dx.doi.org/10.1051/e3sconf/20183402030.

Повний текст джерела

Анотація:

The increment amount of the CO2 emission by years has become a major concern worldwide due to the global warming issue. However, the influence modification of activated carbon (AC) has given a huge revolution in CO2 adsorption capture compare to the unmodified AC. In the present study, the Deep Eutectic Solvent (DES) modified surface AC was used for Carbon Dioxide (CO2) capture in the fixed-bed column. The AC underwent pre-carbonization and carbonization processes at 519.8 °C, respectively, with flowing of CO2 gas and then followed by impregnation with 53.75% phosphoric acid (H3PO4) at 1:2 precursor-to-activant ratios. The prepared AC known as sea mango activated carbon (SMAC) was impregnated with DES at 1:2 solid-to-liquid ratio. The DES is composing of choline chloride and urea with ratio 1:2 choline chloride to urea. The optimum adsorption capacity of SMAC was 33.46 mgco2/gsol and 39.40 mgco2/gsol for DES modified AC (DESAC).

Стилі APA, Harvard, Vancouver, ISO та ін.

Lou, Ben Lin, Yuan Yuan Li, and Ru Xiao. "Preparation and Characterization of Polyacrylonitrile in Aqueous Slurry Polymerization." Materials Science Forum 789 (April 2014): 215–17. http://dx.doi.org/10.4028/www.scientific.net/msf.789.215.

Повний текст джерела

Анотація:

Polyacrylonitrile (PAN) is widely used for its superior properties, and comonomers are usually introduced to improve its properties. In this paper, 2-acrylamide-2-methylpropanesulfonic acid (AMPS) and acrylamide (AM) were used as comonomers to prepare polyacrylonitrile by aqueous slurry polymerization. Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and X-ray diffraction (XRD) was used to characterize the chemical structures, the thermal properties, degree of crystallinity of polyacrylonitrile copolymer. The results show that the best thermal property of AN/AMPS/AM ternary copolymer in cyclization reaction was achieved in the proportion (w/w/w) 98/1/1. The exothermic quantity of AN/AMPS/AM ternary copolymer is 612.1 J/g while that of PAN homopolymer is 519.5 J/g during the cyclization reaction, carried out in DSC under nitrogen atmosphere. The introduction of AMPS and AM has small impact on the degree of crystallinity of PAN, the degree of crystallinity approximates 53.8%

Стилі APA, Harvard, Vancouver, ISO та ін.

Starkova, A. V., Yu N. Karpenko, B. Ya Syropyatov, F. V. Sobin, and N. A. Pulina. "STUDY OF INFLUENCE OF BLOOD THIAZOLINE AMMONIUM 4-CHLOROPHENYL-2-HYDROXY-4-OXO-2-BUTENOATE CONCENTRATION ON ANTICOAGULANT EFFECT UPON SUBCUTANEOUS ADMINISTRATION." Perm Medical Journal 35, no. 1 (February 15, 2018): 88–94. http://dx.doi.org/10.17816/pmj35188-94.

Повний текст джерела

Анотація:

Aim. To study the effect of blood thiazoline ammonium 4-chlorophenyl-2-hydroxy-4-oxo-2-butenoate content on the manifestation of anticoagulant effect upon subcutaneous administration to rabbits. Materials and methods. The studies were fulfilled on outbred rabbits. The substance was administered subcutaneously in the dose of 35 mg/kg. The time of blood coagulation was determined using coagulometer “Minilab 701”, and blood concentration - by means of liquid micro-column chromatograph “Milichrom A-02”. Results. The obtained results prove that maximum concentration of the compound in blood and maximum anticoagulant effect is reached in 30 minutes after subcutaneous administration. The substance anticoagulant effect lasted for 120 minutes after its administration. At present, the compound concentration in blood is equal to 519.8 ± 145.41 ng/ml. Conclusions. The studied compound, when administered subcutaneously, is quickly absorbed and begins to render an anticoagulant effect. Efficacy of action of this compound depends on its blood concentration.

Стилі APA, Harvard, Vancouver, ISO та ін.

Oh, Tak, Jung-Won Hwang, Young-Tae Jeon, and Sang-Hwan Do. "Perioperative Cumulative Fluid Balance and Its Association with an Increase in Costs after Major Surgery." Journal of Clinical Medicine 7, no. 9 (August 21, 2018): 227. http://dx.doi.org/10.3390/jcm7090227.

Повний текст джерела

Анотація:

Positive fluid balance (FB) during the perioperative period may increase the incidence of postoperative complications, which may lead to longer hospitalization and higher hospital costs. However, a definitive association between positive FB and hospital costs has not yet been established. This retrospective observational study examined the association between perioperative FB and hospital costs of patients who underwent major surgical procedures. Medical records of patients who underwent major surgery (surgery time >2 h, estimated blood loss >500 mL) from January 2010 to December 2017 were analyzed to determine the associations between calculated FB (%, total input fluid—output fluid in liter/weight (kg) at admission) and total hospital cost ($). The analysis included medical data of 7010 patients. Multivariable linear regression analyses showed that a 1% increase in FB in postoperative day (POD) 0 (24 h), 0–1 (48 h), 0–2 (72 h), and 0–3 (96 h) significantly increased the total cost by $967.8 (95% confidence interval [CI]: 803.4–1132.1), $688.8 (95% CI: 566.3–811.2), $591 (95% CI: 485.7–696.4), and $434.2 (95% CI: 349.4–519.1), respectively (all p < 0.001). Perioperative cumulative FB was positively associated with hospital costs of patients who underwent major surgery.

Стилі APA, Harvard, Vancouver, ISO та ін.

Hamilton, Michael A., J. Javier Álvaro, Sandra M. Barr, Sören Jensen, Susan C. Johnson, Teodoro Palacios, Deanne van Rooyen, and Chris E. White. "U–Pb zircon ages from tuffaceous beds in the Terreneuvian to Cambrian Series 2 sections of Avalonian southern New Brunswick, Canada: new constraints on chronostratigraphic correlations and the Cambrian time scale." Geological Society, London, Special Publications 542, no. 1 (October 5, 2023): 217–32. http://dx.doi.org/10.1144/sp542-2023-11.

Повний текст джерела

Анотація:

Abstract Avalonian sections in the Saint John area, southern New Brunswick, have long contributed to global understanding of Cambrian chronostratigraphy. A tuffaceous bed in the Ratcliffe Brook Formation (RBF) in the Somerset Street section dated at c. 531 Ma has traditionally been considered to post-date small shelly fossils attributed to the Watsonella crosbyi Zone in the Hanford Brook section. A fine-grained tuffaceous bed approximately 8 m stratigraphically lower in the Somerset Street section yields a chemical abrasion isotope dilution–thermal ionization mass spectrometry zircon age of 532.3 ± 0.3 Ma; a tuffaceous carbonate unit in the lower RBF in Hanford Brook gives an age of 531.5 ± 0.3 Ma. Crystal and crystal-lithic tuff beds near the top of the RBF yield ages of 520.3 ± 0.3 Ma (in Hanford Brook) and 519.1 ± 0.3 Ma (in Ratcliffe Brook). The new ages confirm the correlation between the Somerset Street and Hanford Brook sections based on acritarchs and make the association of small shelly fossils in the Hanford Brook section younger than 531 Ma. This result is relevant to ongoing discussions on the age of the base of undefined Cambrian Stage 2. The radiometric ages also support a young age for the upper part of the RBF, perhaps extending into Epoch 2.

Стилі APA, Harvard, Vancouver, ISO та ін.

Dedy Pratama, Hendro Sudjono Yuwono, Rudi Supriyadi, Herry Herman, Fachreza Aryo Damara, and Avicenna Akbar. "Antioxidant Properties of Curcumin and Its Impact on Arteriovenous Fistula Maturation in End-Stage Kidney Disease Patient with Diabetes Mellitus Type 2." International Journal of Research in Pharmaceutical Sciences 11, no. 4 (December 25, 2020): 7624–29. http://dx.doi.org/10.26452/ijrps.v11i4.4107.

Повний текст джерела

Анотація:

The risk of maturation failure in arteriovenous fistula (AVF) remains high. Curcumin poses antioxidant effects may enhance AVF maturation. This study evaluates the antioxidant effect of Curcumin on AVF maturation among type 2 diabetic patients (T2DM) with end-stage renal disease (ESRD). This was a single-blinded, randomized controlled trial conducted in three tertiary hospitals in Jakarta, Indonesia. Patients underwent the first hemodialysis. A total of 67 patients divided into groups of Curcumin, acetylsalicylic acid, and placebo. After 4 weeks, TAC level among the curcumin group was significantly higher compared to acetylsalicylic acid, and placebo groups 794.2(457.4±1473.7) µM vs. 519.2(247.7 ± 1027.7) µM and 794.2(457.4± 1473.7) µM vs. 542.5(281.91± 1054.64) µM, respectively (p<0.05). Also, TAC after 8 weeks was significantly higher among curcumin group compared to acetylsalicylic acid, and placebo groups (820.5(380.7± 1643.7) µM vs. 509.7(341.0± 981.91) µM and 820.5(380.7± 1643.7) µM vs. 497.7(324.7± 979.2) µM, respectively (p<0.001). The TAC level patients with mature AVF were also higher. A 2000 mg/day of curcumin increases antioxidant capacity after 4 and 8 weeks following AVF surgery among ESRD with T2DM.

Стилі APA, Harvard, Vancouver, ISO та ін.

Zeng, Baimei, Ling Yuan, Jun Chu, Yanqing Yang, and Shide Lin. "Challenges in early identification of causes and treatment of cholestasis in patients with hyperthyroidism: a case report and literature review." Journal of International Medical Research 48, no. 3 (December 16, 2019): 030006051989101. http://dx.doi.org/10.1177/0300060519891018.

Повний текст джерела

Анотація:

Early identification of the causes of cholestasis is important for appropriate management of patients with hyperthyroidism. We report a patient who had hyperthyroidism and severe cholestasis after methimazole (MMI) treatment. The patient was diagnosed as having MMI-induced cholestatic hepatitis. Treatment with MMI was stopped at admission to hospital. However, his serum total bilirubin (TBil) level rose from 410.5 µmol/L to 519.9 µmol/L and prothrombin time activity (PTA) dropped from 81.0% to 52.2% in 10 days. To prevent further deterioration of his liver function, plasma exchange was performed three times, and dexamethasone (10 mg, intravenously) was used each time. His PTA rose to 101% and his TBil continued to increase to 669.8 µmol/L after plasma exchange. He was subsequently diagnosed as having thyrotoxicosis-induced cholestasis and treated with radioactive iodine (380 MBq) 2 weeks after admission. His hyperthyroidism was significantly relieved, but the TBil level further increased to 776.8 µmol/L. Three weeks after admission, oral prednisone (30 mg/day) was used in this patient. Subsequently, his TBil levels gradually decreased and his liver function almost normalized within 3 months. We discuss the literature on cholestasis in the context of hyperthyroidism.

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Дисертації з теми "519.7/2"

Bogso, Antoine Marie. "Étude de peacocks sous l'hypothèse de monotonie conditionnelle et de positivité totale." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0152/document.

Повний текст джерела

Анотація:

Cette thèse porte sur les processus croissants pour l'ordre convexe que nous désignons sous le nom de peacocks. Un résultat remarquable dû à Kellerer stipule qu'un processus stochastique à valeurs réelles est un peacock si et seulement s'il possède les mêmes marginales unidimensionnelles qu'une martingale. Une telle martingale est dite associée à ce processus. Mais dans son article, Kellerer ne donne ni d'exemple de peacock, ni d'idée précise sur la construction d'une martingale associée pour un peacock donné. Ainsi, comme d'autres travaux sur les peacocks, notre étude vise deux objectifs. Il s'agit d'exhiber de nouvelles familles de peacocks et de construire des martingales associées pour certains peacocks. Dans les trois premiers chapitres, nous exhibons diverses classes de peacocks en utilisant successivement les notions de monotonie conditionnelle, de peacock très fort et de positivité totale d'ordre 2. En particulier, nous fournissons plusieurs extensions du résultat de Carr-Ewald-Xiao selon lequel la moyenne arithmétique du mouvement brownien géométrique, encore appelée "option asiatique" est un peacock. L'objet du dernier chapitre est de construire des martingales associées pour une classe de peacocks. Pour cela, nous utilisons les plongements d'Azéma-Yor et de Bertoin-Le Jan. L'originalité de ce chapitre est l'utilisation de la positivité totale d'ordre 2 dans l'étude du plongement d'Azéma-Yor
This thesis deals with real valued stochastic processes which increase in the convex order. We call them peacocks. A remarkable result due to Kellerer states that a real valued process is a peacock if and only if it has the same one-dimensional marginals as a martingale. Such a martingale is said to be associated to this process. But in his article, Kellerer provides neither an example of peacock nor a concrete idea to construct an associated martingale to a given peacock. Hence, as other investigations on peacocks, our study has two purposes. We first exhibit new families of peacocks and then, we contruct associated martingales to certain of them. In the first three chapters, we exhibit several classes of peacocks using successively the notions of conditional monotonicity, very strong peacock and total positivity of order 2. In particular, we provide many extensions of Carr-Ewald-Xiao result which states that the arithmetic mean of geometric Brownian motion, also called "Asian option" is a peacock. The purpose of the last chapter is to construct associated martingales to certain peacocks. To this end, we use Azéma-Yor and Bertoin-Le Jan embedding algorithms. The originality of this chapter is the use of total positivity of order 2 in the study of Azéma-Yor embedding algorithm

Стилі APA, Harvard, Vancouver, ISO та ін.

Bogso, Antoine Marie. "Étude de peacocks sous l'hypothèse de monotonie conditionnelle et de positivité totale." Electronic Thesis or Diss., Université de Lorraine, 2012. http://www.theses.fr/2012LORR0152.

Повний текст джерела

Анотація:

Стилі APA, Harvard, Vancouver, ISO та ін.

Книги з теми "519.7/2"

Stephen, Nash, and Sofer Ariela, eds. Linear and nonlinear optimization. 2nd ed. Philadelphia: Society for Industrial and Applied Mathematics, 2008.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Linear And Nonlinear Optimization. Siam, 2009.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Linear programming and network flows. 3rd ed. Hoboken, NJ: John Wiley, 2005.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Sampling. 3rd ed. Hoboken, N.J: Wiley, 2012.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Sampling. 2nd ed. New York: Wiley, 2002.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Introduction to Survey Sampling. SAGE Publications, Incorporated, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!