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Influence on microorganisms’vital activity of high frequency electromagnetic fields and solutions of catolytes and anolithes 高频电磁场对微生物生命活动的影响及催化剂和油石溶液
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2019-18-4-42-48
V. Sibirtsev, M. A. Chekanov, I. A. Naumov, S.A. Stroyev
A biotesting technique is described, which provides for recording changes in the intensities of elastic light scattering, as well as light absorption and intrinsic photofluorescence of the protein component of samples with viable test microorganisms incubated in a liquid nutrient medium in the presence and absence of various test factors. The results of the analysis using this technique of the influence on the dynamics of vital activity of microorganisms (such as Escherichia coli, Rhodotorula glutinis and Chlorella vulgaris) of various amounts of anolyte and catholyte (obtained by electrolysis of aqueous solutions of NaCl and Na2SO4), as well as external high-frequency electromagnetic fields (EHFEF) with different intensity (U) and frequency of its change (ν) and with different modes of exposure to test microorganisms (TM), are presented. On the basis the results it has been shown that even a fairly simple electrolysis treatment of aqueous solutions of commonly available non-organic salts can be used to prepare effective and safe antiseptic (solutions of anolytes) and probiotic (solutions of catholytes) agents. Weak EHFEF of the megahertz range, depending on their frequency, can significantly inhibit and activate the vital activity of TM. Periodic exposure to EHFEF has a greater effect on TM than permanent one. With the combined action of EHFEF and solutions of anolytes or catholytes, they can mutually reinforce their influence on the vital activity of TM.
描述了一种生物测试技术,该技术提供了记录弹性光散射强度的变化,以及在存在和不存在各种测试因素的情况下,在液体营养培养基中培养有活力的测试微生物样品的光吸收和固有光荧光。利用该技术分析了不同量的阳极电解液和阴极电解液(NaCl和Na2SO4的水溶液电解得到)以及不同强度(U)和变化频率(ν)和不同暴露方式的外部高频电磁场(EHFEF)对微生物(如大肠杆菌、粘红酵母和普通小球藻)的生命活性动态的影响。提出了。结果表明,即使是相当简单的电解处理常见的无机盐的水溶液,也可以用来制备有效和安全的防腐剂(电解质溶液)和益生菌(阴极电解质溶液)剂。兆赫范围内的弱EHFEF,根据其频率的不同,可以显著抑制和激活TM的生命活动。定期接触超高频电磁场对TM的影响大于长期接触超高频电磁场。在EHFEF和阳极液或阴极液溶液的共同作用下,它们可以相互增强对TM生命活性的影响。
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引用次数: 1
The possibility of using pork heart in the manufacture of sausages 用猪心制作香肠的可能性
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2019-18-1-77-83
V. Volchenko, K. V. Dvoryankina
Рассмотрены проблемы использования различных ингредиентов в технологии многокомпонентных пищевых продуктов; отмечена необходимость баланса белковой и жировой составляющих. Выбраны основные направления совершенствования технологий изготовления данных групп продукции, основной упор сделан на колбасные изделия. Рассмотрены варианты совершенствования технологии изготовления вареных колбас, проведен анализ потребительских предпочтений, сделаны выводы. Для проведения исследований использовали общепринятые органолептические, физико-химические методы, а также методы статистического анализа данных. Разработана технология производства мясных колбас с использованием малоценного белкового сырья, в качестве которого было выбрано свиное сердце; установлена проблема высокой обводненности готовой продукции в данном варианте технологии. Для решения указанной проблемы была разработана методика обезвоживания сырья с целью повышения содержания белка в готовом продукте, выбран наилучший вариант обезвоживания свиного сердца путем бланширования острым паром над поверхностью солевого раствора, для чего была проведена оптимизация по концентрации раствора и по времени бланширования. Предлагается использовать полученные результаты для выпуска нового ассортимента колбасных изделий. Ключевые слова: вареные колбасы, кулинарные продукты, термическая обработка.
研究了在多成分食品技术中使用不同成分的问题;注意到需要平衡蛋白质和脂肪成分。选择了改进这些产品组技术的主要方向,重点是香肠产品。考虑了改进煮香肠技术的选择,分析了消费者偏好,得出了结论。研究使用了传统的有机疗法、物理化学方法和统计分析方法。开发了一种用低价值蛋白质原料生产肉肠的技术,选择了猪的心脏;在这种技术中,成品的高包装存在问题。为了解决这一问题,开发了一种脱水方法,以提高成品中的蛋白质含量,通过在盐水表面涂上辣味蒸汽来改善猪的心脏脱水,并根据溶液浓度和时间进行优化。建议使用这些结果来生产一种新的香肠产品。关键字:煮香肠,烹饪,热处理。
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引用次数: 0
Ethane phase equilibrium line 乙烷相平衡线
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2021-20-2-98-104
S. Rykov, I. Kudryavtseva, V. Rykov, M. Nurysheva, B. Kurbanov
On the basis of the modified Clapeyron–Clausius equation, the Rykov elastic line equation, and scale theory, the line of phase ethane in the temperature range of from T = T t = 90.368 K to T = T c = 305.322 K, where T t and T c are the temperatures of triple point and critical pint, has been calculated. The equations of the elastic line, p s = p s (T), vapor, ρ – = ρ – (T), and liquid, ρ + = ρ + (T), and the branches of the saturation line have common critical exponents and critical parameters, and the average diameter f d of the saturation line in the vicinity of the critical point is described by the model [2β, 1 – α] (The Yang-Yang modified model). It is shown that this system of equations conveys experimental data on the pressure and density of saturated vapor, and the density of a saturated liquid of ethane within the uncertainty of these data with a root-mean-square error (RMS): RMS p s = 0,08 %; RMS ρ – = 0,67 %; RMS ρ + = 0,02 %. In the temperature range of from T t to T c , the tables are calculated, including the values p s , ρ – , ρ + and «apparent» heat of vaporization.
根据修正的克拉珀龙-克劳修斯方程、Rykov弹性线方程和尺度理论,计算了乙烷相在T = T = 90.368 K到T = T = c = 305.322 K温度范围内的相线,其中T T和T c分别为三相点温度和临界温度。弹性线p s = p s (T)、蒸汽ρ - = ρ - (T)、液体ρ + = ρ + (T)方程和饱和线分支具有共同的临界指数和临界参数,饱和线在临界点附近的平均直径f d用模型[2β, 1 - α](杨-杨修正模型)来描述。结果表明,该方程系统能在不确定度范围内传递饱和蒸汽的压力和密度以及乙烷饱和液体的密度的实验数据,均方根误差(RMS):均方根误差(RMS) p = 0.08%;RMS ρ - = 0.67%;RMS ρ + = 0.02%。在温度范围从T T到T c,计算表,包括值p s, ρ -, ρ +和“表观”汽化热。
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引用次数: 0
Determination of the shelf life for dried fish-vegetable snacks based on meat and bone fish raw materials 以肉和骨鱼为原料的干鱼蔬菜点心保质期的测定
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2021-20-3-57-64
O. Mezenova, M. Barotova
The relevance of the topic of the work is due to the growing demand for dried highly nutritious snack products (snacks), the need for full use of the biopotential of bony fish (Baltic bream), as well as increased consumption of functional calcium and phosphorus products. The food system was created by hydrothermolysis of meat and bone tissues of bream and their fine grinding, followed by enrichment with a vegetable component (carrots and beets) and food additives. The resulting mass was thinly rolled, molded, and dried hot at a temperature of 1800 C for 30 minutes. In semi-finished products and finished samples, organoleptic, physicochemical and microbiological parameters were determined during storage under specified conditions for 72 days. The scheme of microbiological studies to establish the shelf life of dried fish products was determined by the requirements of the MUC 4.2.1847–2004. The organoleptic characteristics of dried snacks were high, the snacks retained their original shape, the color during storage practically did not change on the 72nd day. Indicators of the chemical composition of ready-made snacks: the mass fraction of water is 18–20 %, table salt is 1.5 %, organic acids are 0.04–0.06 %. The LabMaster-Aw analyzer showed an indicator of the water activity of ready-made dried fish-growing snacks (0.5), the values of which indicate a high antiseptic resistance of the product. The results of microbiological studies to determine the expiration dates indicate that the product meets the regulated microbiological safety criteria. Taking into account the reserve factor of 1.2 for this product group, the shelf life is set for 60 days at a temperature of 4±2°C.
该工作主题的相关性是由于对干制高营养零食产品(零食)的需求不断增长,需要充分利用硬骨鱼(波罗的海鲷)的生物潜能,以及功能性钙和磷产品的消费增加。该食品系统是通过水热分解鲷鱼的肉和骨组织并将其精细研磨,然后加入蔬菜成分(胡萝卜和甜菜)和食品添加剂进行浓缩而制成的。得到的材料被薄卷,模压,并在1800摄氏度的温度下干燥30分钟。对半成品和成品样品在规定条件下保存72天,测定其感官、理化和微生物参数。确定鱼干产品货架期的微生物学研究方案由MUC 4.2.1847-2004的要求确定。干制小吃的感官特征较高,在第72天的贮藏过程中,小吃保持了原来的形状,颜色几乎没有变化。成品零食化学成分指标:水的质量分数为18 - 20%,食盐为1.5%,有机酸为0.04 - 0.06%。LabMaster-Aw分析仪显示了现成鱼干生长零食的水活度指标(0.5),其值表明该产品具有较高的抗菌性。确定有效期的微生物学研究结果表明,产品符合规定的微生物安全标准。考虑到该产品组的储备系数为1.2,在4±2℃的温度下,保质期设定为60天。
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引用次数: 0
Modelling heat transfer in the evaporators of heating-cooling energy systems taking into account nonstationarity of the boiling process 考虑沸腾过程非平稳性的加热-冷却能源系统蒸发器传热模拟
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2022-21-4-52-59
O. Apitsyna, A. Malyshev, A. Zaitsev, O. Malinina, V. E. Ignatiev
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引用次数: 0
Research of meat samples cooling by immersion in single-phase and binary cooling medium 肉类样品在单相和二元冷却介质中浸泡冷却的研究
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2019-18-4-57-63
G. Goncharova, I. V. Agafonkina, S. Borzov, G. V. Borschev
The article considers the possibility of using a two-phase cooling medium (binary ice, in the foreign literature — ice slurry) for immersion cooling of hermetically packed food products. Experimental studies of heat transfer processes from cooled meat products to binary ice and single-phase liquid medium have been carried out. Based on the results obtained, the appropriateness of using binary ice for cooling hermetically packed meat has been assessed. The experimental data have been obtained for the first time and the comparative assessment of the heat transfer intensity from packaged meat to binary ice and single-phase liquid under identical conditions has been correctly carried out. The advantage of binary ice has been confirmed not only in terms of maintaining the temperature of the coolant (storage capacity), but also in terms of higher values of the heat transfer coefficient compared to single-phase liquid coolant when cooling sealed meat products. The data obtained can serve as a basis for the design and development of immersion cooling systems based on binary ice.
本文考虑了采用两相冷却介质(二元冰,在国外文献中称为冰浆)浸泡冷却密封包装食品的可能性。对冷却肉制品向二元冰和单相液体介质的传热过程进行了实验研究。根据所获得的结果,评估了使用二元冰冷却密封包装肉的适宜性。首次获得了实验数据,正确地进行了在相同条件下包装肉对二元冰和单相液体的换热强度的对比评估。二元冰的优势已经得到证实,不仅在保持冷却剂的温度(储存能力)方面,而且在冷却密封肉制品时,与单相液体冷却剂相比,它的传热系数更高。所得数据可作为设计和开发基于二元冰的浸入式冷却系统的依据。
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引用次数: 0
Structural and technological diagram of a nitrogen cooling system of liquefied methane for refueling a medium-class launch vehicle 中型运载火箭燃料补给用液化甲烷氮冷却系统结构及工艺框图
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2020-19-4-27-36
A. Korobkov, M. Kulik, V. V. Red’kin, S. Sergeev, A. Smorodin
Based on the analysis of the preliminary modeling results for the cooling process of liquefied methane in straight-flow and counter-flow tubular heat exchangers, a rational variant of cooling liquefied methane for refueling a medium-class carrier rocket, implemented by a straight-flow heat exchanger, was selected from several options. For a more complete assessment of the processes occurring in the heat exchanger during nitrogen cooling of liquefied methane for the selected rational option, an in-depth simulation of the cooling process of liquefied methane was performed. A comparative analysis of the reliability of competing options for fundamental structural diagram of the nitrogen cooling of the liquefied methane, as a result of which the scheme comprising a nitrogen liquefier with centrifugal compressor and turboexpander of low pressure with booster compressor unit, storage and backup tanks with liquid nitrogen, and a ramjet heat exchanger — cooler of liquid methane was chosen as the base option, was carried out. The results of this work can be used in the design of nitrogen cooling systems of liquefied methane for refueling medium-class launch vehicles.
通过对液化甲烷在直流管式换热器和逆流管式换热器中冷却过程的初步建模结果分析,从几种方案中选择了一种采用直流管式换热器实现的中型运载火箭加注液化甲烷冷却方案。为了更全面地评估所选合理方案中液化气氮气冷却过程中换热器内发生的过程,对液化气冷却过程进行了深入的模拟。对液化气氮气冷却基本结构图的竞争方案进行了可靠性比较分析,最终选择了液化气液化气液化气液化气液化气液化气液化气储罐和备用罐、液化气液化气冲压式换热器-液化气冷却器为基本方案。研究结果可用于中型运载火箭液化气氮气冷却系统的设计。
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引用次数: 0
Technology of proteolytic enzymes production from the digestive or-gans of fish of coastal fisheries in the North-Western region 西北沿海渔业鱼类消化器官生产蛋白水解酶技术
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2023-22-1-66-77
E. A. Bazhenov, L. Baydalinova, T. Grimm
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引用次数: 0
Determination of hygroscopic properties and desorption parameters in the technology of wheat gluten granulation 小麦面筋造粒工艺吸湿性能及解吸参数的测定
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2019-18-2-86-94
E. Fomenko, I. Aleksanyan, O. A. Petrovichev, V. Lysova
Проведено исследование по совершенствованию технологии сухой клейковины и ее аппаратурного оформления, в которой основной проблемой является не только процесс влагоудаления, а в большей степени процессы подготовки нативной клейковины, как объекта сушки. Представлено эмпирическое исследование гигроскопических характеристик пшеничной клейковины, которые определялись посредством тензометрического метода Ван Бамелена. После реализации серии экспериментов были получены изотермы сорбции влаги клейковиной пшеничной, при температурах воздуха 298 К и 313 К. Математическая обработка экспериментальных данных представлена в виде обобщенной логарифмической зависимости логарифма активности воды от температуры и влагосодержания. Для решения задачи рационального использования энергои материальных ресурсов в технологии производства сухого клейковинного продукта, предложено, для получения объектом сушки сыпучих свойств, реализовать процессы вакуумного самопроизвольного замораживания и последующего подсушивания сырой клейковины до появления на ее поверхности твердой корочки, что существенно повысит эффективность технологии. Экспериментально получено процентное содержание свободной влаги в продукте и конечная влажность, при которой полуфабрикат будет иметь на поверхности сухую корочку, наличие которой минимизирует адгезионное слипание получаемых гранул. Представлены результаты органолептической оценки качества подсушенного полуфабриката, который в случае необходимости обладал бы всеми характеристиками объекта последующего обезвоживания и гранулирования, т. е. заданной хрупкостью. Органолептическими критериями или минимально допустимыми контрольными оценками качества подсушки штранга являлись такие дескрипторы как цвет корки, изменяющийся в процессе подсушки и его внешний вид. Предложенная схема производства является оригинальной и позволит сберечь материальные и энергоресурсы при реализации технологии сухой клейковины. В данной продукции и совершенствовании ее технологии заинтересованы специалисты мукомольной и хлебопекарной промышленности, а также производители макаронных, спиртовых изделий, крахмалопродуктов и др. Ключевые слова: клейковина пшеничная, гигроскопические свойства, глютен, вакуумное замораживание, сушка, влагосодержание, органолептика, профилограмма.
已经进行了一项研究,以改进干谷蛋白及其硬件技术,其中最主要的问题不仅是排水过程,而且更大程度上是作为干谷蛋白的准备过程。这是对小麦谷蛋白湿润特性的实证研究,是通过范·巴梅伦应变法确定的。经过一系列实验,小麦谷蛋白水分的等温线在空气温度298 k和313 k下被引入,实验数据的数学处理是对水活动与温度和湿度的广义对数依赖。为了解决在干胶粘剂生产技术中合理利用能源和物质资源的挑战,建议将胶粘剂干燥特性的对象,在硬胶粘剂出现之前进行真空自发冻结和干燥过程,从而大大提高技术的效率。试点获得产品中自由湿度的百分比和最终湿度,在这种湿度下,半成品表面有干燥的外壳,这将使受试者的粘附性最小化。提供器官麻醉半成品质量评估的结果,如果有必要的话,它具有随后脱水和颗粒化的所有特征,即脆弱性。strang干燥的有机标准或最小容许的控制评估是外皮的颜色,在干燥过程中变化和外观。拟议的生产计划是原创的,它将为实现干谷蛋白技术节省物质和能源资源。面粉和面包行业的专家对这种产品及其技术感兴趣,意大利面、酒精、淀粉等关键字包括:麦麸、湿度、谷蛋白、真空冷冻、湿度、有机镇定剂、轮廓图等。
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引用次数: 2
Development of exergic analysis technique for steam-compression heat pumps using environmentally friendly refrigerants 采用环保制冷剂的蒸汽压缩热泵用能分析技术的发展
Pub Date : 1900-01-01 DOI: 10.17586/1606-4313-2023-22-2-49-58
A.A. Malyshev, V.S. Zhivaev, O. Malinina
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引用次数: 0
期刊
Journal International Academy of Refrigeration
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