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Journal articles on the topic 'Latent preparation'

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Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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1

Chaitawittanun, Nonthacha, Duangduen Bhanthumnavin, Duchduen Emma Bhanthumnavin, Kosol Meekun, Narisara Peungposop, and Saran Pimthong. "Psycho-Situational Path Model of Ambidextrous Preparation for Quality Aging in College Students." International Journal for Innovation Education and Research 8, no. 8 (August 1, 2020): 841–52. http://dx.doi.org/10.31686/ijier.vol8.iss8.2592.

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During the period of old age, everyone wishes to have good quality of living. However, only the ones who have been well-prepared at the younger age could make this wish comes true. This study aims at investigating the psychosocial antecedents of the preparation of quality aging based on ambidextrous approach. Samples were 489 undergraduate students. Path analysis with latent model revealed a good fit. The findings revealed that psychological latent trait (future orientation and self-control, need for achievement, mental health, and core self-evaluation) and situational latent variable (perceived modeling, social support, and social norm) directly affected the preparation for quality aging (present quality of life, knowledge acquisition, and knowledge usage) via the psychological latent state R2 of 0.606 latent (attitude towards preparation, and locus of control of preparation) with the. Discussion and implications are offered.

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2

Lomas, David A., Peter R. Elliott, Wun-Shaing W. Chang, Mark R. Wardell, and Robin W. Carrell. "Preparation and Characterization of Latent α1-Antitrypsin." Journal of Biological Chemistry 270, no. 10 (March 10, 1995): 5282–88. http://dx.doi.org/10.1074/jbc.270.10.5282.

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3

Larsson, Helena, Peter Åkerud, Kerstin Nordling, Elke Raub-Segall, Lena Claesson-Welsh, and Ingemar Björk. "A Novel Anti-angiogenic Form of Antithrombin with Retained Proteinase Binding Ability and Heparin Affinity." Journal of Biological Chemistry 276, no. 15 (January 12, 2001): 11996–2002. http://dx.doi.org/10.1074/jbc.m010170200.

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Latent antithrombin, an inactive antithrombin form with low heparin affinity, has previously been shown to efficiently inhibit angiogenesis and tumor growth. We now show that heat treatment similar to that used for preparation of latent antithrombin also transforms antithrombin to another form, which we denote prelatent, with potent anti-angiogenic and anti-tumor activity but with retained proteinase- and heparin-binding properties. The ability of prelatent antithrombin to inhibit angiogenesis is presumably due to a limited conformational change, which may partially resemble that in latent antithrombin. Such a change is evidenced by a different cleavage pattern of prelatent than of native antithrombin by nontarget proteinases. Prelatent antithrombin exerts its anti-angiogenic effect by a similar mechanism as latent antithrombin,i.e.by inhibiting focal adhesion formation and focal adhesion kinase activity, thereby leading to decreased proliferation of endothelial cells. The proteinase inhibitory fractions in commercial antithrombin preparations, which have been heat treated during production, also have anti-angiogenic activity, comparable with that of the prelatent antithrombin form.

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4

Lee, Yoongu, and Yong-Jin Yoon. "Exploring the Formation of Exercise Habits with the Latent Growth Model." Perceptual and Motor Skills 126, no. 5 (July 16, 2019): 843–61. http://dx.doi.org/10.1177/0031512519862689.

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This study investigated the antecedent factors affecting exercise preparation and performance habits and provides basic data for the development of health promotion interventions, based on what was found to be most effective in improving intention and habit. The participants were 114 university students who were willing to participate regularly in exercise and physical activities and interested in forming exercise habits. After coding, we analyzed the complete data set through frequency analysis, reliability, and latent growth model analysis. The provision of early rewards positively affected an initial exercise preparation habit. Both initial consistency and development of consistency also positively affected the development of exercise preparation, and initial behavioral complexity positively affected initial exercise preparation. However, no factors influenced an exercise performance habit. Thus, forming an exercise preparation habit requires fun, personal control, and repetitive behavior while forming an exercise performance habit is particularly challenging. These results may help construct a program for continuous exercise participation.

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5

Il Dueik, Issa M. A., and Gordon A. Morris. "Latent Fingerprint Enhancement Using Tripolyphosphate-Chitosan Microparticles." International Journal of Carbohydrate Chemistry 2013 (February 21, 2013): 1–4. http://dx.doi.org/10.1155/2013/615124.

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Chitosan has been widely used in the preparation of microparticles for drug delivery; however, it has not been considered in forensic applications. Tripolyphosphate- (TPP-) chitosan microparticles were formed using ionotropic gelation in the presence of a coloured dye and deposited onto latent fingerprints enabling fingerprint identification.

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6

Zhang, Yan Lai, Lei Luo, Shao Zheng Wu, Zhao Zhang, Chang Qian Li, and Xiu Ping Li. "Preparation of the Microencapsulated Phase Change Material." Advanced Materials Research 557-559 (July 2012): 1436–39. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1436.

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The microencapsulated phase change material is a kind of functional material with latent heat. It may be used applied heat storage and energy transport systems. Methods of the microcapsule production and four kinds of production process are introduced.

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7

Van Aken, Joan Ernst, and Paul C. van Fenema. "Designing and Building Latent Networks for Effective Transboundary Emergency Preparation." Academy of Management Proceedings 2014, no. 1 (January 2014): 12440. http://dx.doi.org/10.5465/ambpp.2014.12440abstract.

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8

Jousseaume, B., V. Gouron, M. Pereyre, and J.-M. Francès. "Silicone curing and polyurethane preparation promoted by latent organotin catalysts." Applied Organometallic Chemistry 5, no. 2 (March 1991): 135–38. http://dx.doi.org/10.1002/aoc.590050212.

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9

Zhao, Liyang, Xiaojun Yang, Limin Ma, and Qingyang Li. "Preparation of imidazole embedded polyurea microcapsule for latent curing agent." Journal of Applied Polymer Science 137, no. 43 (April 24, 2020): 49340. http://dx.doi.org/10.1002/app.49340.

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10

Blank, R., H. Nitschke, R. Saliwan Neumann, and A. Kranzmann. "Materialographic Preparation of Salt." Practical Metallography 59, no. 10 (September 24, 2022): 628–40. http://dx.doi.org/10.1515/pm-2022-0058.

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Abstract Molten salt containing systems gain in importance for sustainable energy use and production. For research and development, interactions of molten salts with potential container materials are of major interest. This article introduces preparation procedures to display an intact metal and salt microstructure and their interface using light optical microscopy and scanning electron microscopy. The exemplary material combination is the ternary salt mixture NaCl-KCl-MgCl2 and the low alloyed steel 1.4901 (T92) with a maximum service temperature of 550 °C. These are potential elements/materials for use in latent heat thermal energy storages.

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11

Hadi Moradian, Mohammad, and Hossein Resalati. "Linking process variables and newsprint properties in Mazandaran Wood and paper Industries." Polish Journal of Chemical Technology 16, no. 1 (March 1, 2014): 110–16. http://dx.doi.org/10.2478/pjct-2014-0019.

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Abstract Pulp and paper industries have provided great research opportunities to control systems. The objective of this study was to investigate the relationships between 80 process variables of CMP tower and stock preparation, and 17 newsprint quality properties in Mazandaran Wood and Paper Industries (MWPI). After the preparation of two suitable data series considering the time needed for pulp to paper, the relations between process dependent and newsprint independent variables were determined using partial least squares (PLS) regression. As a result, two PLS models were developed. The first model with 4 latent vectors categorized and related CMP tower variables and the second one, through 8 latent vectors connected stock preparation variables with paper properties. PLS regression coefficients determined how much the most influencing process variables impact each paper properties

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12

Castro-Muñoz, Roberto, Kumar Varoon Agrawal, and Joaquín Coronas. "Ultrathin permselective membranes: the latent way for efficient gas separation." RSC Advances 10, no. 21 (2020): 12653–70. http://dx.doi.org/10.1039/d0ra02254c.

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This review focuses on the application of ultrathin membranes for gas separation, describing the membrane preparation protocols applied. This includes atomic layer deposition, in situ crystal formation, interfacial polymerization and Langmuir–Blodgett technique.

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13

Yuan, Xin Hua, Qiu Su, Li Yin Han, Qian Zhang, Yan Qiu Chen, Yong Qiang Liu, Tian Tian Liu, and Lei Gao. "Preparation and Performance of Self-Healing Epoxy Composites by Microcapsulated Approach." Key Engineering Materials 636 (December 2014): 73–77. http://dx.doi.org/10.4028/www.scientific.net/kem.636.73.

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Microencapsulated E-51 epoxy resin healing agent and phthalic anhydride latent curing agent were incorporated into E-44 epoxy matrix to prepare self-healing epoxy composites. When cracks were initiated or propagated in the composites, the microcapsules would be damaged and the healing agent released. As a result, the crack plane was healed through curing reaction of the released epoxy latent curing agent. In the paper, PUF/E-51 microcapsules were prepared by in-situ polymerization. The mechanical properties of the epoxy composites filled with the self-healing system were evaluated. The impact strength and self-healing efficiency of the composites are measured using a Charpy Impact Tester. Both the virgin and healed impact strength depends strongly on the concentration of microcapsules added into the epoxy matrix. Fracture of the neat epoxy is brittle, exhibiting a mirror fracture surface. Addition of PUF/E-51 microcapsules decreases the impact strength and induces a change in the fracture plane morphology to hackle markings. In the case of 8.0 wt% microcapsules and 3.0 wt% latent hardener, the self-healing epoxy exhibited 81.5% recovery of its original fracture toughness.

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14

Guo, Jing, Jing Nan Fan, and Heng Xue Xiang. "Preparation and Research of Phase Change Material Based EVA / Binary Fatty Acids Composite." Advanced Materials Research 311-313 (August 2011): 2048–51. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2048.

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In this study, melting method is adopted for the preparation of phase change material based EVA /binary fatty acids composite. Phase change temperature and latent heat of the binary fatty acids and EVA /binary fatty acids composite are characterized using Differential Scanning Calorimetry (DSC). The structure and thermal insulation properties of the binary fatty acids and EVA /binary fatty acids composite are investigated using Fourier transformation infrared spectroscope (FTIR) and temperature-recording instrument. The DSC results show that Phase change temperature and latent heat of the binary fatty acids are less than that of pure Stearic Acid and Lauric Acid, The latent heat of EVA /binary fatty acids composite are increase with the increasing of the binary fatty acid content. Cooling curves show that the binary fatty acid and EVA /binary fatty acids composite have good insulation properties. The FTIR results show that EVA and binary fatty acid are combined by intermolecular forces.

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15

Barela, Peter B. "Conditioned Withdrawal in Goldfish: A Simple and Inexpensive Preparation for the Study of Classical Fear Conditioning in Vertebrates." Psychological Reports 110, no. 1 (February 2012): 173–86. http://dx.doi.org/10.2466/11.23.pr0.110.1.173-186.

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A preparation for the study of classical fear conditioning in vertebrates is described. Its unique features are that it is inexpensive and easy to construct and operate. The following classical conditioning phenomena are demonstrated using this preparation: excitatory conditioning, extinction, contextual conditioning, blocking, a conditioned inhibition discrimination, and latent inhibition.

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16

Fang, Yutang, Shengyan Kuang, Xuenong Gao, and Zhengguo Zhang. "Preparation of nanoencapsulated phase change material as latent functionally thermal fluid." Journal of Physics D: Applied Physics 42, no. 3 (December 31, 2008): 035407. http://dx.doi.org/10.1088/0022-3727/42/3/035407.

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17

Yang, Xiaojun, Liyang Zhao, Qingyang Li, and Limin Ma. "Preparation of Latent Curing Agent for Epoxy Resin by Encapsulation Technology." IOP Conference Series: Materials Science and Engineering 746 (March 5, 2020): 012021. http://dx.doi.org/10.1088/1757-899x/746/1/012021.

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18

Ma, Bao Guo, Jun Wang, Yuan Yuan Wu, and Wen Yang. "Preparation of Energy Storage Ceramsite Manufactured from East Lake Sludge." Advanced Materials Research 287-290 (July 2011): 694–98. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.694.

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Phase change material (PCM) can absorb or release a large quantity of latent heat when it changes phase from solid state to liquid state or vice versa, and has very important applications in thermal energy storage systems. One of the combination methods is incorporating PCM in porous building materials, which are suitable matrix materials for PCM. In this paper, two kinds of ceramsite manufactured from East Lake sludge and paraffin were selected to form phase change composites by using the vacuum impregnation method. Differential scanning calorimeter (DSC) analysis was used to evaluate the phase change behavior. The result showed that the peak temperature (TP) and latent heat of the melting process of the paraffin in ceramsite A and B was a little higher than that of the bulk paraffin.

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19

AlGhalayini, Kamal W. "The Latent Power of Bitter Melon on Diabetes Mellitus:." Saudi Journal of Internal Medicine 2, no. 1 (June 30, 2012): 39–42. http://dx.doi.org/10.32790/sjim.2.1.8.

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Momordica charantia (known as bitter melon) is a tropical and subtropical vine of cucurbitaceae plant group native to Africa. It is being widely used and advertised for its hypoglycemic effects. However, to date, no large clinical trial has been published on the efficacy of any type of such preparation. The main objective of this case report is to increase the awareness of the latent power of this commonly used herb.

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20

AlGhalayini, Kamal W. "The Latent Power of Bitter Melon on Diabetes Mellitus:." Saudi Journal of Internal Medicine 2, no. 1 (June 30, 2012): 39–42. http://dx.doi.org/10.32790/sjim.2012.2.1.8.

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Momordica charantia (known as bitter melon) is a tropical and subtropical vine of cucurbitaceae plant group native to Africa. It is being widely used and advertised for its hypoglycemic effects. However, to date, no large clinical trial has been published on the efficacy of any type of such preparation. The main objective of this case report is to increase the awareness of the latent power of this commonly used herb.

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21

Huang, Jing Yu, Shi Lei Lv, Chen Xi Zhang, and Zhi Wei Wang. "Thermal Properties Analysis of Several N-Alkanes Eutectic Mixtures Applied in Building Envelopes." Advanced Materials Research 512-515 (May 2012): 3007–10. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.3007.

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This study focuses on the preparation, thermal properties of alkanes eutectic mixtures (n-Octadecane/n-Eicosane, n-Octadecane/n-Docosane and n-Heptadecane /n-Eicosane) as candidate phase change material (PCM) for low temperature latent heat storage systems in building envelopes. Their melting temperature and latent heat were tested by Differential scanning calorimetry (DSC). The testing values were closed to calculation values of accepted theory that ensured the reliability of those datas. The results indicated n-Octadecane/n-Docosane eutectic mixture was more promising PCM for buildings in terms of melting temperature (25.3°C) and latent heat values of melting (158.2J/g).

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22

Zhao, Cheng Shou, Na Li, Liu Yan Wu, and Jun Min Chen. "Preparation of Epoxy/PEG Shape-Stabilized Phase Change Materials by In Situ Reactive Blending." Advanced Materials Research 430-432 (January 2012): 1023–27. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1023.

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Recently, solid-liquid phase change materials (PCMs) have caused much attention due to their large latent heat. In order to solve their sealed problem, shape-stabilized methods have become a popular research topic. In this study, we prepared epoxy/polyethylene glycol (PEG) shape-stabilized PCMs with different mass ratios successfully by in-situ reactive blending. The maximum mass percentage of PEG dispersed into epoxy to form epoxy/PEG shape-stabilized PCM was determined as 70wt % by observing the morphology at the temperature above the phase transition. The thermal properties, such as melting temperature, latent heat, were measured by DSC. The results showed that the melting temperatures ranged from 55.5 OC to 60.4 OC and the latent heat was proportional to the mass percentage of PEG.

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23

Zhang, Hong Tao, You Jing Zhao, Jing Li Li, Li Jie Shi, and Min Wang. "Preparation and Heat Transfer/Thermal Storage Properties of High-Temperature Molten Nitrate Salts." Materials Science Forum 814 (March 2015): 60–64. http://dx.doi.org/10.4028/www.scientific.net/msf.814.60.

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The thermal stability of molten salts, operating temperature range and latent heat of melting for the molten salts at high temperature have been studied in the present investigation. The multi-component molten salts composed of purified potassium nitrate, purified sodium nitrate were prepared by statical mixing method [1]. The stability experiments were carried out at 500 to 600°C, and the experimental result showed that the purified nitrate molten salts performed better high-temperature thermal stability and its optimum operating temperature was increased from 500°C to 550°C. DSC analysis indicated that the purified nitrate molten had a lower melting point and a higher phase change latent heat. The melting point of purified binary nitrate molten salts was sharp decreased to 225.2°C and latent heat of melting for molten salts was also reduced from 78.41J/g to 81.15J/g compared with unpurified nitrate salts. Besides, the change in the concentration of impurities by analyzing in the binary molten salts, and combination of XRD test results can be found that the degree of degradation reduce and improve the thermal efficiency of the storage of binary molten salts by purified sodium nitrate and potassium nitrate.

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24

Liu, Yan Jun, and Ling Yan Zhang. "The Development of Latent Fingermarks for Visualization by Using AuNPs@AuNCs Core/Shell Nanoparticles." Nano 15, no. 10 (October 2020): 2050132. http://dx.doi.org/10.1142/s1793292020501325.

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A method for in situ preparation of fluorescent AuNPs@AuNCs core/shell nanoparticles by the template of BSA coated gold nanoparticles was developed. The as-prepared AuNPs@AuNCs core/shell nanoparticles possessed advantages such as uniform size, improved monodispersity and excellent fluorescence. The AuNPs@AuNCs core/shell nanoparticles in powder and suspension form were applied to the detection of latent fingermark due to the above properties. The developed latent fingermarks by AuNPs@AuNCs core/shell powder on various surfaces can exhibit excellent ridge details with good contrast between the fingermarks and the substrate. Moreover, under alternative light sources, the latent fingermarks developed with AuNPs@AuNCs core/shell powder work well.

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25

Xu, Weixing, Yichao Lu, Bin Wang, Jianjun Xu, Guangdou Ye, and Mengjin Jiang. "Preparation and Characterization of High Latent Heat Thermal Regulating Fiber Made of PVA and Paraffin." Journal of Engineered Fibers and Fabrics 8, no. 2 (June 2013): 155892501300800. http://dx.doi.org/10.1177/155892501300800205.

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A convenient method for preparing the thermal regulating fibers with high latent heat has been developed. PVA thermal regulating fibers were prepared via a wet spinning process, with paraffin being the phase change material. The structures and properties of these fibers were investigated by SEM, TGA, DSC and tensile strength tester. With the paraffin content in the fibers increasing from 30wt% to 70wt%, the latent heat of the fibers increases from 42.8J/g to 87.8J/g and the paraffin phase structures change from separation into partial interconnection. PVA matrix can not wrap paraffin effectively when the paraffin content increases up to 50wt%, so the paraffin loss in the spinning process increases. The thermal stability of fibers with low paraffin content is better than that of fibers with high paraffin content. After 100 heat-and-cool cycles, the latent heat of fibers lose a little. The tensile strength of these thermal regulating fibers is good enough for application in wrapping, filling, and nonwovens.

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26

Wang, Gu Xia, Sheng Wei Guo, and Wei Bing Xu. "Microwave-Assisted Preparation of PS Phase Change Microcapsules." Advanced Materials Research 834-836 (October 2013): 152–55. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.152.

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Polymer phase change microcapsules were prepared through microwave-assisted emulsion polymerization, with the core of hexadecane, the shell of styrene, the emulsifier of sodium dodecyl sulfate, the initiator of potassium persulfate. A few of key factors which can influence the thermal performance and the encapsulation, such as emulsifiers, initiators, temperature and reaction time were investigated. FTIR and DSC were employed to characterize the structure, the phase transition temperature and latent heat.

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27

Li, Hai Jian, Zhi Jiang Ji, Zhi Jun Xin, and Jing Wang. "Preparation of Phase Change Building Materials." Advanced Materials Research 96 (January 2010): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amr.96.161.

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The types and characteristics of phase change materials were discussed. With respect to application in building materials, the PCM should have more attractive properties including high latent heat values, stability and proper melting point, inflammability, corrosiveness and supercooling. Phase change building material (PCBM) was prepared using vacuum absorption method and tested by means of Differential Scanning Calorimetry(DSC) and Scanning Electron Microscopy(SEM). The testing results have shown that organic PCM was absorbed into the holes of inorganic carriers completely and distributed evenly with stable performances. It is concluded that the composite PCM has steady temperature-adjusting function and the preparation means is acceptable.

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28

Chen, Jing Jing, Hui Wang, and Chuan Fang Zhu. "Preparation and Characterization of Several Latent Curing Agents for Epoxy Acrylate Resins." Applied Mechanics and Materials 278-280 (January 2013): 397–400. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.397.

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In this paper, novel latent curing agents for epoxy acrylic resin a~e were synthesized and characterized with 1H NMR and MS in this study. Pot life of epoxy acrylic resins containing 3wt.% a~e or γ-aminopropyltrithoxysilane was compared in this paper and experiment data indicated that a~e were inactive in epoxy acrylic resin at room temperature. Curing temperature for double compositions resin is about 120°C and pot life at room temperature is longer than 6 months. The optimal curing condition for these curing agents were selected through several experiments.

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29

Zhang, Bao Yun, Chang Mei Jiao, Peng Wang, Long Jiang, Bao Hua Ji, and Dong Fang. "Preparation of Expanded Perlite-Based Binary Eutectic Composite of Phase Change Heat Storage Materials." Advanced Materials Research 383-390 (November 2011): 2889–93. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2889.

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The binary eutectic of lauric acid-stearic acid / expanded perlite composite phase change materials (PCM) was prepared using the method of vacuum impregnation. The structures and properties of this composite PCM were characterized by FT-IR, SEM, DSC and TG analysis. The results showed that the binary eutectic of fatty acid had been composed with porous skeleton expanded perlite completely in a physical method, the phase transition temperature of composite PCM was about 33.0 °C and latent heat was 131.3 J/g. it had a good thermal stability after 100 times of recycling and gave the phase transition temperature 33.5 °C and the latent heat of 128.1 J/g respectively.

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30

Slavutskaya, Maria, and Valerii V. Shulgovskii. "Presaccadic Brain Potentials in Conditions of Covert Attention Orienting." Spanish Journal of Psychology 10, no. 2 (November 2007): 277–84. http://dx.doi.org/10.1017/s1138741600006545.

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Twelve healthy subjects underwent investigation of averaged (electroencephalogram) EEG potentials during preparation for motor activity and in the latent period (LP) of visually evoked saccades by presentation of stimuli using Posner's (1980) design of “cost-benefit.” It has been shown that covert spatial attention orientation leads to an increase in amplitude and decrease in latency of presaccadic initiation potential peaks within the saccadic latent period (LP) (P-100, N –50). Processes of covert orientation of attention during the interstimulus interval period of anticipation of the target stimulus correlate with the increase of slow negativity of fronto-parietal-temporal localization. Spatial-temporal changes of presaccadic potentials are evidence of the fact that orientation of attention during motor preparation and saccadic initiation is reflected in intensification of fronto-parietal networks of saccadic control and attention, activating the fronto-medio-thalamic and thalamo-parietal modulating systems.

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31

Zhang, Wei, Shang Hao, Dandan Zhao, Guiqin Bai, Xin Zuo, and Jiming Yao. "Preparation of PMMA/SiO2 PCM microcapsules and its thermal regulation performance on denim fabric." Pigment & Resin Technology 49, no. 6 (June 7, 2020): 491–99. http://dx.doi.org/10.1108/prt-01-2020-0003.

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Purpose This study aims to evaluate the thermal performance of phase change materials (PCMs) microcapsules (MCs) attached using SiO2 microspheres and investigate the thermal regulation effect on the coated denim fabric. Design/methodology/approach The PCM microcapsule was prepared by in situ polymerization using a mixture of solid paraffin and butyl stearate as core material (CM) and methyl methacrylate as a monomer. The SiO2 microparticles were attached to the outer layer of the membrane to enhance the thermal performance of MCs. The morphology, chemical structure, latent heat storage and thermal resistance of MCs were characterized. PCM MCs were coated on the denim fabric and thermo-gravimetric analysis was conducted; thermal insulation and thermal infrared imaging performance of the coated fabrics were also investigated. Findings The diameters of SiO2 particles and PCMs MCs were 300-500 nm and 1 μm, respectively. SiO2 was wrapped on single-wall PCMs MCs with the mass ratio of 1:5. With the addition of SiO2, the phase transition temperature range of MCs increased from 34°C to 39°C, and the endothermic and exothermic latent heat decreased by 5.35 J/g and 10.07 J/g, respectively. The degradation rate of MCs was significantly slowed down at high temperature. The denim fabric coated with MCs revealed thermal regulation property. After absorbing heat, the MCs slowed down the rate of heat loss and extended the heat release time. Research limitations/implications The phase transition temperature of the composite CM was wide, and the latent heat storage was reduced. The addition of SiO2 particles can significantly slow down the rate of heat loss, but it further reduces the latent heat storage performance. Practical implications The method developed provided a simple and practical solution to improve the thermal regulation performance of fabrics. Originality/value The method of adjusting the phase transition temperature range of the composite CM is novel and many applications could be found in preparation of PCMs and thermal management.

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32

Todoriuk, V. B., B. V. Gutyj, R. I. Khomyk, and R. O. Vasiv. "ВПЛИВ ФЕРРОВЕТУ 7,5 % І ФЕРОСЕЛУ Т НА КОНЦЕНТРАЦІЮ МІНЕРАЛЬНИХ РЕЧОВИН В СИРОВАТЦІ КРОВІ ПОРОСЯТ, ХВОРИХ НА ФЕРУМДЕФІЦИТНУ АНЕМІЮ." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 18, no. 3(71) (October 8, 2016): 139–43. http://dx.doi.org/10.15421/nvlvet7131.

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In the article presents the results of experimental studies on the pharmacological action of iron dextran preparations – ferrovet–7.5%, which in 1 ml dextran containing 75 mg of ferric iron, and ferosel–T, 1 ml of which, in addition to 75 mg of ferric iron, additionally contains 0.3 mg selenium (in the form of sodium selenite) the concentration of minerals in the blood serum of pigs for latent iron deficit anemia.Established that at 21 days postnatal period, in the whey of blood of piglings for latent iron deficit anemia, a level of Calcium was on 11.8%, and to Phosphorus – on to 8.4% lower. Reserves of iron in the indicated period of depot were fully used for hematopoietic and receipt of its mother's milk insufficient for optimal erytrotsytopoez because the concentration of iron in the blood serum of pigs did not satisfy his need for hematopoiesis.In the case of iron dextran preparations for the treatment of iron deficiency anemia pigs found an increase in Calcium, Phosphorus, Selenium and Iron. So on 21 days after birth for piglings, which entered ferrovet 7.5%, in the whey of blood the concentration of Calcium was increased on 30.0% (r < 0.01), to Phosphorus – on 15.6%, and which ferosel–T was entered accordingly increased on 33.4% (r < 0.01) and 19.3%.The concentration of Selenium and Iron in the blood serum of piglets research groups, which used ferrovet 7.5% and ferosel–T is likely to have increased since 7 day experiment. Shown that iron deficit anemia of piglings efficiency of application of preparation of ferosel–T with a medical and prophylactic purpose is higher, than to preparation of ferrovet–7.5 %, that predefined by the combined action of Iron and Selenium.

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Bian, Xin, Yi Qiu Tan, Jian Fu Lv, and Li Yan Shan. "Preparation of Latent Heat Materials Used in Asphalt Pavement and Theirs’ Controlling Temperature Performance." Advanced Engineering Forum 5 (July 2012): 322–27. http://dx.doi.org/10.4028/www.scientific.net/aef.5.322.

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In order to solve the rutting diseases of asphalt concrete pavement, latent heat materials for asphalt pavement were prepared and its controlling temperature performance was studied. Phase change materials (PCM), which were fitted to thermal environment of road were selected, phase change asphalt, diatomite powder and pottery sand granular composite phase change materials (CPCM) were prepared by three kinds of import modes. The CPCM were chosen by comparing the performance of above mentioned materials. Latent heat asphalt mixture (LHAM) was made by replacing mineral powder and fine aggregate with CPCM. Its controlling temperature ability was tested by temperature monitor system. The results show that, comparing to asphalt mixture, LHAM can reduce the temperature to 8-10°C. Therefore, the LHAM has a good effect on adjusting the road temperature.

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Chang, Wun-Shaing W., and Paul L. Harper. "Commercial Antithrombin Concentrate Contains Inactive L-forms of Antithrombin." Thrombosis and Haemostasis 77, no. 02 (1997): 323–28. http://dx.doi.org/10.1055/s-0038-1655962.

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SummaryThe preparation of antithrombin concentrate for clinical use requires a viral inactivation step. In most commercial preparations this is achieved by heat pasteurisation. This process would be expected to alter the conformation of antithrombin from the active native species to an inactive latent (L-form) state (1, 2). To determine if this occurs during commercial preparation and to identify the proportion of the product in the inactive state, we examined the various antithrombin conformations within a therapeutic concentrate. The antithrombin concentrate was separated into five fractions by heparin-Sepharose chromatography. The fraction with the highest heparin affinity retained full activity, whereas the four fractions with reduced heparin affinity (~40% of the total antithrombin) had lost their inhibitory function. These inactive antithrombins were intact, monomeric, thermostable and resistant to unfolding in 8 M urea. Moreover, the protein patterns on isoelectric focusing and non-denaturing-PAGE showed that there were at least two different L-forms with isoelectric points separate from the native active species. Our findings demonstrate that approximately 40% of the antithrombin preparation examined exists as inactive l-forms. The clinical significance of administering this altered material is uncertain.

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Salis, Christos, Nadine Martin, and Laura Reinert. "Sentence Recall in Latent and Anomic Aphasia: An Exploratory Study of Semantics and Syntax." Brain Sciences 11, no. 2 (February 12, 2021): 230. http://dx.doi.org/10.3390/brainsci11020230.

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We investigated whether semantic plausibility and syntactic complexity affect immediate sentence recall in people with latent and anomic aphasia. To date, these factors have not been explored in these types of aphasia. As with previous studies of sentence recall, we measured accuracy of verbatim recall and uniquely real-time speech measures. The results showed that accuracy did not distinguish performance between latent aphasia and neurotypical controls. However, some of the real-time speech measures distinguished performance between people with latent aphasia and neurotypical controls. There was some evidence, though not pervasive, that semantic plausibility and syntactic complexity influenced recall performance. There were no interactions between semantic plausibility and syntactic complexity. The speed of preparation of responses was slower in latent aphasia than controls; it was also slower in anomic aphasia than both latent and control groups. It appears that processing speed as indexed by temporal speech measures may be differentially compromised in latent and anomic aphasia. However, semantic plausibility and syntactic complexity did not show clear patterns of performance among the groups. Notwithstanding the absence of interactions, we advance an explanation based on conceptual short-term memory as to why semantically implausible sentences are typically more erroneous and possibly also slower in recall.

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Cui, H. Z., and G. F. Zhu. "Preparation of Phase-Change-Material/Lightweight Aggregate Composite as an Energy Storage Material." Advanced Materials Research 347-353 (October 2011): 3404–8. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3404.

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In this paper, a phase-change-material/lightweight aggregate (PCM-LWA) composite thermal energy storage material was prepared by absorbing the lauryl alcohol, which is one kind of phase change materials, into porous lightweight aggregates (LWAs) that have an excellent absorbability. In such a composite, the lauryl alcohol serves as a latent heat storage material and the porous lightweight aggregate acts as the supporting material. In order to prevent the melted lauryl alcohol leak from the porous LWAs, surface seal processing for the PCM-LWA was necessary. In this research, pure cement paste and polymer modified cement paste were used to seal the PCM-LWA surface. Through comparison between the differential scanning calorimetry (DSC) tests for lauryl alcohol and PCM-LWA, it can be known that the solid-liquid phase change temperature of the composite PCM-LWA was slightly higher than that of the lauryl alcohol, and latent heat of the PCM-LWA was smaller than that of the pure PCM.

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Wang, Wei C., Anthony Worsley, and Victoria Hodgson. "Classification of main meal patterns – a latent class approach." British Journal of Nutrition 109, no. 12 (November 19, 2012): 2285–96. http://dx.doi.org/10.1017/s0007114512004539.

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Relatively little examination of the meals that are prepared in households has been conducted, despite their well-defined properties and widespread community interest in their preparation. The purpose of the present study was to identify the patterns of main meal preparation among Australian adult household meal preparers aged 44 years and younger and 45 years and over, and the relationships between these patterns and likely socio-demographic and psychological predictors. An online cross-sectional survey was conducted by Meat and Livestock Australia among a representative sample of people aged 18–65 years in Australia in 2011. A total of 1076 usable questionnaires were obtained, which included categorical information about the main meal dishes that participants had prepared during the previous 6 months along with demographic information, the presence or absence of children at home, confidence in seasonal food knowledge and personal values. Latent class analysis was applied and four types of usage patterns of thirty-three popular dishes were identified for both age groups, namely, high variety, moderate variety, high protein but low beef and low variety. The meal patterns were associated differentially with the covariates between the age groups. For example, younger women were more likely to prepare a high or moderate variety of meals than younger men, while younger people who had higher levels of education were more likely to prepare high-protein but low-beef meals. Moreover, young respondents with higher BMI were less likely to prepare meals with high protein but low beef content. Among the older age group, married people were more likely to prepare a high or moderate variety of meals than people without partners. Older people who held strong universalist values were more likely to prepare a wide variety of meals with high protein but low beef content. For both age groups, people who had children living at home and those with better seasonal food knowledge were more likely to prepare a high variety of dishes. The identification of classes of meal users would enable health communication to be tailored to improve meal patterns. Moreover, the concept of meals may be useful for health promotion, because people may find it easier to change their consumption of meals rather than individual foods.

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Zhang, Guoqing, Changwei Cai, Yilai Wang, Guojin Liu, Lan Zhou, Juming Yao, Jiri Militky, Jaromir Marek, Mohanapriya Venkataraman, and Guocheng Zhu. "Preparation and evaluation of thermo-regulating bamboo fabric treated by microencapsulated phase change materials." Textile Research Journal 89, no. 16 (November 18, 2018): 3387–93. http://dx.doi.org/10.1177/0040517518813681.

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Two types of microencapsulated phase change materials (ENPCMs) were synthesized by polymerization. The core material of ENPCM was n-octadecane and the shell materials were polymethyl methacrylate-butyl acrylate and polymethyl methacrylate-butyl acrylate-hydroxyethyl methacrylate. Subsequently, the synthesized ENPCMs were applied onto bamboo fabric by the dip and dry method. The properties of ENPCMs were analyzed in terms of surface morphology, size distribution and latent heat; the treated bamboo fabrics were evaluated in terms of surface morphology, hydrophilicity, washing fastness and heat storage capacity. The results showed that polymethyl methacrylate-butyl acrylate/ n-octadecane (PMBO) microcapsules had an irregular shape, while polymethyl methacrylate-butyl acrylate-hydroxyethyl methacrylate/ n-octadecane (PMBHO) microcapsules were spherical, and the mean diameters of both microcapsules were less than 1 µm. The latent heat of phase change material (PCM) microcapsules was almost the same at a thermal storage capacity of 110 J/g. There were many more and more even PMBHO microcapsules deposited on bamboo fabric than that of PMBO microcapsules deposited on bamboo fabric. Bamboo fabrics treated by both microcapsules were hydrophilic, and the hydrophilicity of fabric treated by PMBHO microcapsules was even better. The ratio of PCM microcapsules to bamboo fabric was about 1:4, and the latent heat of treated bamboo fabrics was about 20 J/g. Moreover, the treated bamboo fabrics exhibited excellent washing fastness due to the strong binding strength between the highly hydrophilic microcapsules and bamboo fibers. Approximately 72% of PCM microcapsules were retained on the fabric after 15 washing cycles.

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Guzmán, Dailyn, Xavier Ramis, Xavier Fernández-Francos, and Angels Serra. "Preparation of click thiol-ene/thiol-epoxy thermosets by controlled photo/thermal dual curing sequence." RSC Advances 5, no. 123 (2015): 101623–33. http://dx.doi.org/10.1039/c5ra22055f.

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A new dual curing procedure based in the combination of UV-induced thiol-ene and thermal thiol-epoxy reactions has been established by the use of a latent amine precursor that can catalyze the thermal process.

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40

Guo, Jing, Heng Xue Xiang, Xue Yong Gong, and Qian Qian Wang. "Preparation and Properties of Polyacrylonitrile / Binary of Fatty Acids Composites as Phase Change Fibers." Advanced Materials Research 239-242 (May 2011): 1199–202. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1199.

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With stearic acid/lauric acid binary of fatty acids as phase change material, polyacrylonitrile (PAN) as framework material, PAN/ binary of fatty acids phase change fibers is prepared by wet spinning process. Morphology and latent heat storage capacity of phase change fibers are investigated using microscope, scanning electron microscope (SEM) and differential scanning calorimetry (DSC), respectively. Influences of the ratio of PAN/ binary of fatty acids, concentration of the coagulation and spinning liquid on breaking strength have been studied by yarn strength tester. The results show that breaking strength of phase change fiber dried at 110°C hot air is higher than that of dried at room temperature, the breaking strength of PAN/ binary of fatty acids fiber increases with the increment of the ratio of PAN/ binary of fatty acids, concentration of the coagulation and spinning liquid. The latent heat storage capacity of phase change fiber has reached 18J/g, the phase transition temperature is about 28.6°C.

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McBane, Robert D., Waldemar E. Wysokinski, James H. Chesebro, and Whyte G. Owen. "Antithrombotic Action of Endogenous Porcine Protein C Activated with a Latent Porcine Thrombin Preparation." Thrombosis and Haemostasis 74, no. 03 (1995): 879–85. http://dx.doi.org/10.1055/s-0038-1649841.

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SummaryEndogenously activated protein C is evaluated for antithrombotic activity in porcine carotid arteries subjected to mechanical trauma. Protein C is activated by intravenous administration of guanidinobenzoyl- thrombin, which binds to thrombomodulin and there deacylates to yield thrombin. The bound, transiently active thrombin yields a peak of anticoagulant activity between 5 and 10 min after infusion of the latent thrombin. Inhibition of thrombin binding in vivo by co-infusing an active-site-blocked thrombin preparation elicits acute and lethal systemic thrombosis. Nearly occlusive platelet thrombosis, which occurs within 30 min of crushing 1 cm segments of carotid arteries with a standard hemostat, is blocked by endogenous protein C activation initiated 2 min before the crush injury. It is concluded that activated protein C blocks thrombosis in deeply injured musculo-elastic arteries, and that activation of latent thrombin bound to thrombomodulin in vivo is a practical means for delivery of pharmacologically effective concentrations of activated protein C.

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Böhm, Winfried. "Deutsche Pädagogik zwischen Kriegsverherrlichung und Friedenssehnsucht." Vierteljahrsschrift für wissenschaftliche Pädagogik 95, no. 1 (February 27, 2019): 7–23. http://dx.doi.org/10.30965/25890581-09501003.

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Abstract German Philosophy of Education between Preparation for War and Desire for Peace From both a historical and critical perspective, the article reconstructs the problematic transition of German Philosophy of Education from an enlightened to a romantic thinking as well as from the state’s political concept of orientation to that of the people in the nineteenth and early twentieth centuries. This reveals a strange fluctuation of pedagogy in theory and practice between a latent preparation for war on the one hand and a vague longing for peace on the other hand.

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Niu, Yan Fang, Wei Llin Zhao, and Yu Ying Gong. "Preparation and Thermophysical Properties of SiO₂ Nanofluids." Advanced Materials Research 771 (September 2013): 125–28. http://dx.doi.org/10.4028/www.scientific.net/amr.771.125.

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Aqueous nanofluids composed of SiO2 nanoparticles with different sizes (15 nm, 30 nm, 50 nm) at a low volume concentration were prepared by a two-step method. The suspension and dispersion characteristics were experimentally examined by the zeta potential, average size and absorption spectrum. The thermophysical properties, such as viscosity, thermal conductivity, surface tension and latent heat of vaporization were experimentally measured. A lot of thermophysical data of SiO2 nanofluids were obtained. The influences of the particle size, particle volume concentration and temperature on thermophysical properties were discussed briefly.

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Li, Wei, Yan Dong, Xu Zhang, and Xueling Liu. "Preparation and Performance Analysis of Graphite Additive/Paraffin Composite Phase Change Materials." Processes 7, no. 7 (July 13, 2019): 447. http://dx.doi.org/10.3390/pr7070447.

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In the thermal energy storage system, the thermal properties of phase change materials (PCM) have a great influence on the system performance. In this paper, paraffin-based composite phase change material with different graphite additive (expanded graphite, EG; graphene, GR; and graphene oxide, GO) and different concentrations (0.5 to 2.0%) are manufactured by a two-step method combining mechanical agitation and ultrasonic vibration. The characteristics of charge/discharge processes are studied, and the thermophysical properties are measured by T-history method. The experimental results show that the thermal conductivity and heat charge rate of the composite PCM are effectively improved by adding the graphite additive to the PCM, and the addition of additives can improve the melting point of the material. When the same graphite additive is added, the higher the concentration, the higher the thermal conductivity of the composite PCM, and the latent heat decreases with the increase of concentration. When adding the same amount of carbon additives, the graphene/paraffin composite PCM has the highest heat charge/discharge rate and thermal conductivity. It is finally concluded that graphene is the most promising candidate for heat transfer enhancement of paraffin among three carbon additives even though the EG-based composite PCM gives relatively high latent heat.

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45

Nowakowska, M., and M. Pajecki. "Latent class analysis for identification of occupational accident casualty profiles in the selected Polish manufacturing sector." Advances in Production Engineering & Management 16, no. 4 (December 18, 2021): 485–99. http://dx.doi.org/10.14743/apem2021.4.415.

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The objective of the analysis is identifying profiles of occupational accident casualties as regards production companies to provide the necessary knowledge to facilitate the preparation and management of a safe work environment. Qualitative data characterizing employees injured in accidents registered in Polish wood processing plants over a period of 10 years were the subject of the research. The latent class analysis (LCA) method was employed in the investigation. This statistical modelling technique, based on the values of selected indicators (observed variables) divides the data set into separate groups, called latent classes, which enable the definition of patterns. A procedure which supports the decision as regards the number of classes was presented. The procedure considers the quality of the LCA model and the distinguishability of the classes. Moreover, a method of assessing the importance of indicators in the patterns description was proposed. Seven latent classes were obtained and illustrated by the heat map, which enabled the profiles identification. They were labelled as follows: very serious, serious, moderate, minor (three latent classes), slight. Some recommendations were made regarding the circumstances of occupational accidents with the most severe consequences for the casualties.

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Pattarith, Kongsak, Saksit Chanthai, and Rachadaporn Benchawattananon. "Fluorescent Labeling of Silica Gel Powder using Zingiber Montanum Extract fora Bright Latent Fingerprint Detection under UV Light." Oriental Journal Of Chemistry 37, no. 3 (June 30, 2021): 541–46. http://dx.doi.org/10.13005/ojc/370304.

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This research was to study the preparation of fluorescent dust powder to enhance the detection of ultra-bright latent fingerprints using natural plant extract associated with adsorption on silica gel particles by a simple and cheap method environmentally friendly. To study the physical and chemical properties of the fluorescent powder, various factors affecting the latent fingerprints detection including different surface characteristics, temperature, time, and overlapping passive fingerprints were investigated. From the results, it was found that the fingerprints on the surface of different materials could be performed, and gave good inspection trace,which can be seen with naked eye and appear brightly under UV light at a wavelength of 366 nm. For the persistence study of the latent fingerprints, it was also found that when kept it in a dark place at room temperature for 30 days, the fingerprints were still visible to the naked eye and glow clearly under UV light.In addition, the overlapping fingerprints can be clearly identified. Therefore, the study of the fluorescent silica gel dust powder demonstrates good performance,and it is a potential use to detect latent fingerprints as a witness in forensic processes.

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Wang, Jun, Rui Peng, Yufeng Luo, Qing Wu, and Qianling Cui. "Preparation of fluorescent conjugated polymer micelles with multi-color emission for latent fingerprint imaging." Colloids and Surfaces A: Physicochemical and Engineering Aspects 615 (April 2021): 126192. http://dx.doi.org/10.1016/j.colsurfa.2021.126192.

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Choi, Kang-Hyuk, Kwan-Sik Youn, and Kook-Hyun Yu. "Preparation of Tri-n-alkyl[32P]phosphine Oxide for latent Treatment of Hepatic Tumors." Journal of the Korean Chemical Society 49, no. 2 (April 20, 2005): 161–66. http://dx.doi.org/10.5012/jkcs.2005.49.2.161.

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49

Konuray, Osman, Nuria Areny, José M. Morancho, Xavier Fernández-Francos, Àngels Serra, and Xavier Ramis. "Preparation and characterization of dual-curable off-stoichiometric amine-epoxy thermosets with latent reactivity." Polymer 146 (June 2018): 42–52. http://dx.doi.org/10.1016/j.polymer.2018.05.040.

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Xing, Suli, Jinshui Yang, Yalin Huang, Qing Zheng, and Jingcheng Zeng. "Preparation and characterization of a novel microcapsule-type latent curing agent for epoxy resin." Materials & Design 85 (November 2015): 661–70. http://dx.doi.org/10.1016/j.matdes.2015.07.098.

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