Готові списки джерел за темами / Physico-Chemical interactions

Добірка наукової літератури з теми "Physico-Chemical interactions"

Автор: Grafiati
Опубліковано: 1 червня 2024

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

Оберіть тип джерела:

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Physico-Chemical interactions".

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.

Зміст

  1. Статті в журналах
  2. Дисертації
  3. Книги
  4. Частини книг
  5. Тези доповідей конференцій
  6. Звіти організацій

Статті в журналах з теми "Physico-Chemical interactions":

1

Chaabna, Manel, Lina Aissa, Fadhila Debbah, and Nassima Taleb. "Physico-chemical incompatibilities." Batna Journal of Medical Sciences (BJMS) 1, no. 2 (December 31, 2014): 107–10. http://dx.doi.org/10.48087/bjmstf.2014.1212.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Compatibility problems are frequently encountered in hospitals, particularly in intensive care units. Physico-chemical incompatibilities (PCI) may have different origins and several types. The result is inactivation of the active ingredient reacted training or derivative(s) more or less toxic. The issue of PCI is made complex, moreover, by the fact that the reactions involved may be influenced by many factors. This chemical problem becomes a public health concern because it poses a risk to the patient.
2

Jolicoeur, Carmel, and Marc-André Simard. "Chemical admixture-cement interactions: Phenomenology and physico-chemical concepts." Cement and Concrete Composites 20, no. 2-3 (January 1998): 87–101. http://dx.doi.org/10.1016/s0958-9465(97)00062-0.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Petrak, Karel. "Physico-chemical basis of specific interactions involving carbohydrates." Advanced Drug Delivery Reviews 13, no. 3 (March 1994): 211–13. http://dx.doi.org/10.1016/0169-409x(94)90012-4.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Rudenko, M. M., V. V. Punahin, N. I. Beloshytska, and M. Kh Sydikov. "FEATURES PHYSICO-CHEMICAL INTERACTIONS IN ACTIVATED CEMENT SYSTEM." Science and Transport Progress, no. 11 (June 25, 2006): 198–200. http://dx.doi.org/10.15802/stp2006/18823.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The article enlists the main fundamentals of theoretical substantiation of physical and chemical interactions in the activated cement system. It has been shown that the course of the hydration and structure-forming processes of an activated cement system differs greatly from the processes, occurring in cement dough traditional design. The studies having been carried out are to a certain degree capable of explaining the mechanisms of ion interactions in the complex process of the structure-forming in the activated cement systems.
5

Heyrovský, Michael, and Barbora Prokopová. "Heterogeneous Physico-Chemical Interactions Following Electrode Reaction: Interaction of Folates with Thiols." Collection of Czechoslovak Chemical Communications 62, no. 2 (1997): 172–84. http://dx.doi.org/10.1135/cccc19970172.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Folates do not react chemically with thiols in solution, however, they cause shifts of voltammetric reversible reduction peaks of disulfides towards positive potentials. This is explained as due to the formation of adducts between folates and thiols at the electrode surface. Analogous shifts, but towards negative potentials, were observed with the voltammetric reversible oxidation peak of a reduced form of folic acid after addition of thiols, and were ascribed to the same cause. According to this interpretation the shifts would provide a measure of free enthalpy of the weak interaction between the two partners and the electrode. It is suggested that the observed effect could serve as a simplified model of processes which occur between folates and proteins in the microheterogeneous structure of the living matter.
6

Fejős, Ida, Yang He, Gergely Völgyi, Adrienn Kazsoki, Jin Sun, Weiming Chen, Tamás Sohajda, Lajos Szente, Xiangrui Jiang, and Szabolcs Béni. "Tapentadol enantiomers: Synthesis, physico-chemical characterization and cyclodextrin interactions." Journal of Pharmaceutical and Biomedical Analysis 88 (January 2014): 594–601. http://dx.doi.org/10.1016/j.jpba.2013.10.005.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Hanulová, Mária, and Matthias Weiss. "Membrane-mediated interactions – a physico-chemical basis for protein sorting." Molecular Membrane Biology 29, no. 5 (March 30, 2012): 177–85. http://dx.doi.org/10.3109/09687688.2012.667838.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Cruz dos Santos, Sandra, Nichole Osti Silva, João Batista dos Santos Espinelli, Marcelo Augusto Germani Marinho, Zeane Vieira Borges, Natália Bruzamarello Caon Branco, Fabrício Luiz Faita, et al. "Molecular interactions and physico-chemical characterization of quercetin-loaded magnetoliposomes." Chemistry and Physics of Lipids 218 (January 2019): 22–33. http://dx.doi.org/10.1016/j.chemphyslip.2018.11.010.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Houria, Baazi, Kalla Mahdi, and Tebbi Fatima Zohra. "Hydrochemical Characterisation of Groundwater Quality: Merdja Plain (Tebessa Town, Algeria)." Civil Engineering Journal 6, no. 2 (February 1, 2020): 318–25. http://dx.doi.org/10.28991/cej-2020-03091473.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The objective of this work is to evaluate the physico-chemical quality of the groundwater of the Merdja plain and to determine the sources of mineralization. This quality is influenced by several environmental and anthropogenic factors such as geological context, climate, precipitation and interaction between groundwater and aquifers and human activities. A Principal Component Analysis (PCA) on samples taken from several wells spread over the entire Tebessa plain (Merdja) allowed us to detect two axes that explain 73.4% of the information. The first axis describes the variables related to mineralisation and the second one describes those related to agricultural activity. Multidimensional Positioning (MDS) confirmed the interaction of physico-chemical parameters between them and their influence on groundwater quality by highlighting three groups of wells according to their physico-chemical characteristics, particularly those containing high concentrations of nitrates. This contamination is mainly the result of spreading the fertilisers and wastes that are dumped into the plain without treatment. Salinization is the result of long-term interactions between groundwater and geological formations.
10

Bare, Yohanes, Nurul Imaniyah AHmad, and Yohanes Nong Bunga. "Molecular Interaction of Chili Compounds (Capsicum annum L) as a COX-2 Inhibitor." Mangifera Edu 6, no. 2 (January 31, 2022): 115–28. http://dx.doi.org/10.31943/mangiferaedu.v6i2.124.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Curly red chili (Capsicum annum L.) is a vegetable that has health benefits. Besides being used as an addictive substance in traditional medicine, Capsicum annum L. is also used for cough treatment, antiseptic, anti-irritant, anti-inflammatory. This research study aims to analyze the physico-chemical and its molecular interactions with COX-2. Capsaicin (CID: 1548943), dihydrocapsaicin (CID: 107982) and homocapsaicin (CID: 6442566) compounds were downloaded from pubchem. While the COX protein (ID: 6cox) from the Protein Data Bank. Molecular interaction and analized by HEX. 8.0.0 and Discovery Studio. The three compounds contained in curly red chilies have unique physico-chemical characteristics. The results of the interaction show that the curly mera chili has a physiological function by inhibiting the performance of COX-2
Більше джерел
Також вас можуть зацікавити розширені добірки на тему "Physico-Chemical interactions" для конкретних типів джерел:
Статті в журналах Дисертації

Дисертації з теми "Physico-Chemical interactions":

1

Kerbrat, Michael. "Physico-chemical interactions of acidic trace gases with ice in snow /." [S.l.] : [s.n.], 2009. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Bhattacharjee, Arijit. "Physico-chemical investigation on molecular interactions occurring in various liquid systems." Thesis, University of North Bengal, 2010. http://hdl.handle.net/123456789/1319.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Pulido, Companys Alba. "Physico-chemical phenomena in soft monolayers: chiral recognition, microfluidics and protein interactions." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/275954.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
In this thesis, several physico-chemical phenomena occurring at the two-dimensional environment of a Langmuir monolayer are studied. In the first section, the characterization of Langmuir monolayers of an azobenzene derivative is presented, together with the induction of chirality by the action of a chemical and a physical force, inside labile condensed domains formed by the trans isomer. This has been compared with results of another study done in the group for a homologue azobenzene molecule. In addition, we have studied a heterochiral recognition phenomenon in monolayers by means of the interaction of two enantiomeric chiral azobenzene derivative surfactants. The following section focuses on the field of two-dimensional microfluidics, and encompasses the analysis of different transport processes occurring at the interface between two monolayers that are coflowing through a channel. In this context, studies of the diffusion between co-flowing monolayers have resulted in a slight increase in the diffusion coefficient value for experiments with curvilinear channels, and when vortices are introduced in the system. In contrast, increasing the concentration gradient between co-flowing monolayers has not been successful at producing a noticeable impact in the measured diffusion coefficient values. On the other hand, a two-dimensional dissolution process has been visualized, with a rate that follows a classic dissolution model. Different unsuccessful attempts to realize a chemical reaction between coflowing monolayers are presented. Moreover, we have addressed the flow of monolayers in open microchannels driven by surface tension gradients, determining that drag at the interface and lateral confinement result in the formation of backflow patterns that carry the subphase liquid upstream through self-organized micro-ducts. This backflow patterns depend on channel geometry and are bound by velocity stagnation surfaces, whose shape and location has been related to the interfacial velocity profiles by means of the combination of a simple model and particle image velocimetry measurements. In the last section, we adapt the protocols used in two-dimensional microfluidics to study the insertion and diffusion of a protein in a phospholipid monolayer.
En aquesta tesi s’han estudiat diferents fenòmens físico-químics en l’àmbit de les monocapes de Langmuir. En una primera secció, s’han caracteritzat monocapes de Langmuir d’un derivat d’azobenzè que presenta una separació de fases entre els seus dos possibles isòmers. S’ha explorat la inducció de quiralitat en dominis condensats aïllats, rics en isòmer trans, mitjançant l’acció d’una força quiral química (un dopant quiral), i una de física (un vòrtex). Els resultats obtinguts s’han comparat amb els d’un altre estudi realitzat prèviament en el grup, fet amb un derivat d’azobenzè homòleg. A part, s’ha estudiat un fenomen de reconeixement quiral en monocapes, degut a la interacció de dos enantiòmers quirals d’un altre derivat azobenzènic. Una segona secció de la tesi es centra en el camp de la microfluídica bidimensional, i mostra l’estudi de diferents fenòmens de transport que ocorren en la interfase entre dues monocapes que flueixen al llarg d’un canal. En concret, s’han fet experiments de difusió entre monocapes que co-flueixen per un canal, per tal de trobar les condicions en les que s’obté un increment de la difusió, traduït en un augment del valor del coeficient de difusió mesurat. D’aquesta manera, els experiments realitzats en circuits amb forma de serpentí, o en els que s’hi ha creat vòrtexs, presenten un augment en la difusió. En canvi, l’efecte de l’augment del gradient de concentració existent entre les dues monocapes no ha resultat en canvis apreciables en els coeficients de difusió mesurats. D’altra banda, s’ha visualitzat un procés de dissolució en dues dimensions que segueix el model de dissolució clàssic, i s’han fet experiments per tal d’aconseguir visualitzar una reacció en la línia de contacte entre dues monocapes. A més, s’ha estudiat la formació d’un flux de retorn en la subfase com a resultat del flux d’una monocapa en la interfase, i s’ha pogut relacionar amb perfils de velocitat interficials anòmals obtinguts. En l’última secció, s’han adaptat els protocols experimentals utilitzats en la microfluídica bidimensional, per tal d’estudiar la inserció i difusió d’una proteïna en una monocapa de fosfolípids.
4

Wessman, Per. "Physico-Chemical Investigations of, and Characterization of Model Membranes for, Lipid-Peptide Interactions." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-89432.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Pradhan, Rajendra. "Molecular interactions in mixtures of some industrially important solvents: a physico-chemical study." Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2698.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Septien, Rojas Jose M. "Physico-chemical interactions between silica, salts, water and organohydroxy compounds in clear gel toothpaste formulations." Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325423.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Mansour, Karam Abdelaal <1988&gt. "Ocean-Atmosphere Interactions: Linking Oceanic Biological Activity to Marine Aerosol Physico-Chemical and Cloud Properties." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amsdottorato.unibo.it/9548/1/PhD_Thesis_UNIBO_Karam_Mansour.pdf.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
In this work, in-situ measurements of aerosol chemical composition, particle number size distribution, cloud-relevant properties and ground-based cloud observations were combined with high-resolution satellite sea surface chlorophyll-a concentration and air mass back-trajectory data to investigate the impact of the marine biota on aerosol physico-chemical and cloud properties. Studies were performed over the North-Eastern Atlantic Ocean, the central Mediterranean Sea, and the Arctic Ocean, by deploying both multi-year datasets and short-time scale observations. All the data were chosen to be representative of the marine atmosphere, reducing to a minimum any anthropogenic input. A relationship between the patterns of marine biological activity and the time evolution of marine aerosol properties was observed, under a variety of aspects, from chemical composition to number concentration and size distribution, up to the most cloud‐relevant properties. At short-time scales (1-2 months), the aerosol properties tend to respond to biological activity variations with a delay of about one to three weeks. This delay should be considered in model applications that make use of Chlorophyll-a to predict marine aerosol properties at high temporal resolution. The impact of oceanic biological activity on the microphysical properties of marine stratiform clouds is also evidenced by our analysis, over the Eastern North Atlantic Ocean. Such clouds tend to have a higher number of smaller cloud droplets in periods of high biological activity with respect to quiescent periods. This confirms the possibility of feedback interactions within the biota-aerosol-cloud climate system. Achieving a better characterization of the time and space relationships linking oceanic biological activity to marine aerosol composition and properties may significantly impact our future capability of predicting the chemical composition of the marine atmosphere, potentially contributing to reducing the uncertainty of future climate predictions, through a better understanding of the natural climate system.
8

Adhikari, Ratan. "Studies on the physico-chemical characteristics of selected oxazine dyes and their interactions with surfactants." Thesis, University of North Bengal, 2004. http://hdl.handle.net/123456789/829.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Ahmed, Shansuzzaman. "Studies on physico-chemical characteristics of selected cationic dyes and their interactions with smectite and zeolite." Thesis, University of North Bengal, 1996. http://hdl.handle.net/123456789/769.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Mishra, Dipu Kumar. "Some novel transition metal complexes of polydentate ligands: synthesis, physico-chemical characterization and DNA Interaction study." Thesis, University of North Bengal, 2021. http://ir.nbu.ac.in/handle/123456789/4759.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Книги з теми "Physico-Chemical interactions":

1

Cima, Francesca, ed. Larval Settlement on Marine Surfaces: The Role of Physico-Chemical Interactions. MDPI, 2023. http://dx.doi.org/10.3390/books978-3-0365-7552-0.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Частини книг з теми "Physico-Chemical interactions":

1

Bennett, Richard H., and Matthew H. Hulbert. "Physico-Chemical Interactions." In Clay Microstructure, 5–45. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4684-2_2.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Vignes-Adler, Michèle. "Physico-Chemical Aspects of Forced Wetting." In Drop-Surface Interactions, 103–57. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-2594-6_4.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Ohki, Shinpei. "Physico-Chemical Factors Underlying Membrane Adhesion and Fusion." In Cell and Model Membrane Interactions, 267–83. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3854-7_16.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Seuvre, Anne-Marie, and Andrée Voilley. "Physico-Chemical Interactions in the Flavor-Release Process." In Springer Handbook of Odor, 35–36. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-26932-0_13.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Nardin, M., E. M. Asloun, and J. Schultz. "Physico-Chemical Interactions between Carbon Fibers and Peek." In Controlled Interphases in Composite Materials, 285–93. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-7816-7_28.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Guzmán, Eduardo, Ana Mateos-Maroto, Francisco Ortega, and Ramón G. Rubio. "Electrostatic Layer-by-Layer Self-Assembly Method: A Physico-Chemical Perspective." In Supramolecular Assemblies Based on Electrostatic Interactions, 169–202. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_6.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Atmeh, Amre R., and Timothy F. Watson. "BiodentineTM Physico-Chemical Properties: From Interactions with Dental Tissues to Ageing." In Biodentine™, 11–30. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80932-4_2.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Markov, A. Yu, V. V. Strokova, I. Yu Markova, and M. A. Stepanenko. "Physico-Chemical Properties of Fuel Ashes as Factor of Interaction with Cationic Bitumen Emulsion." In Lecture Notes in Civil Engineering, 294–300. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54652-6_44.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Teterin, Yu A. "Physico-Chemical and Adsorption Properties of Bio-Sorbents and Mechanisms of Their Interaction with Radionuclides." In Biotechnology for Waste Management and Site Restoration, 135–39. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1467-4_16.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Bognon-Küss, Cécilia. "Metabolism in Crisis? A New Interplay Between Physiology and Ecology." In History, Philosophy and Theory of the Life Sciences, 193–216. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-12604-8_11.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
AbstractThis chapter investigates the hybrid relationships between metabolism, broadly and a-historically understood as the set of processes through which alien matter is made homogeneous to that of the organism, and forms of vitalism from the eighteenth century on. While metabolic processes have long been modeled in a reductionist fashion as a straightforward function of repair and expansion of a given structure (either chemically, or mechanistically), a challenging vitalist view has characterized metabolism as a creative, organizing, vital faculty. I suggest that this tension was overcome in Claude Bernard’s works on “indirect nutrition”, in which nutrition, rightly conceived as a general vital phenomenon common to plants and animals, was both characterized as an instance of the general physico-chemical determinism of all phenomena and as the sign and condition of the “freedom and independence” of the organism with respect to the environment. I propose that Bernard’s theory of indirect nutrition was central in the elaboration of his general physiology and has, at the same time, underpinned a self-centered view of biological identity in which the organism creates itself continuously at the detriment of its external milieu. I further argue that this conception of biological individuality as metabolically constructed has since, and paradoxically, supported a view in which the organism appears as an autonomous and self-creating entity. I then contrast this classical view of the metabolic autonomy of the organism with the challenges raised by microbiome studies and suggest that these emerging fields contribute to sketch an ecological conception of the organism and its metabolism through the reconceptualization of its relationship with the environment. The recent focus on a “microbiota – host metabolism” axis contributes to shift the focus away from the classical concept of organism, somehow externalizing vitalism out of the autonomous individual in favor of an ecological, collaborative, and interactionist view of the living.

Тези доповідей конференцій з теми "Physico-Chemical interactions":

1

Renouf, Mathieu. "Physico-Chemical Modeling of Third Body Rheology." In STLE/ASME 2010 International Joint Tribology Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ijtc2010-41036.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The well-known concept of third body was introduced by Godet in the seventies to characterise the discontinuous and heterogeneous interface that separates two bodies in contact. This thin layer (from some nanometers to some micrometers high) appears to possess its own rheology depending of contact conditions, material properties and often, extra unknown parameters. If its main common role concerns essentially mechanical aspects such as velocity accommodation, load carrying capacity and solid lubricant, it plays an important role in other physical aspects. For example, it ensures the thermal continuity between two bodies in contact and explains the jump of temperature observed experimentally. Moreover, it is able to capture the maximal temperature through its thickness. Due to the difficulty to instrument a real contact without disturbing the local rheology, observations of the third body rheology occur only on simplified experimental set-up. To reproduce and try to understand “real contact in presence of third body”, numerical tools have been developed and adapt to face new challenge raised by the third-body concept. The discontinuity and heterogeneity of such interface led researchers to use discrete element methods (DEM) to describe its evolution. Several improvments of the method allow to deal with the mechanical and the thermal behaviour of such media but without interactions. The integration of physicochemical aspects is presented in the paper to link thermal and mechanical behaviour and proposed a model able to represent the multi-physical feature of a contact interface.
2

Miu, Lucretia, Simona-Maria Paunescu, Maria-Cristina Micu, Iulia-Maria Caniola, Madalina Ignat, Claudiu Sendrea, and Elena Badea. "Chemical and physico-mechanical characterizations of leather for restoration." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.v.7.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Leather is a complex material mostly consisting of a matrix of collagen, chemically stabilized by various tannins. This matrix, sooner or later undergoes alterations as a consequence of interactions between their structure and environment. A comprehensive study based on multiple chemical and physico-mechanical standard tests regarding leather samples which were artificially aged from 7 to 112 days has been made at 70°C. The behavior in artificial aging of calf leather samples tanned at pilot level with two different vegetal tannins, mimosa and quebracho, were investigated due to its’s similarity to the natural degradation of historical leather samples. Physico-mechanical characteristics of historical leather can be corelated with the high impact of degree of deterioration even though there are no standard regulations. To be able to choose the proper way to achieve compatibility with an appropriate material in the restoration-conservation process, multiple sample characteristic must be known. The condition of historical leather can be assessed by a series of simple visual and physical examinations which determine the flexibility, strength and coherency of the fibers and then correlate these assessments with the condition of leather as determined by various chemical and physical-chemical analyses. Therefore, the following chemical standard tests were made: volatile substances, shrinkage temperature, extractable substances, total soluble substances and the following physico-mechanical tests: tensile strength, elongation at breaking and tear resistance.
3

Kasaai, Mohammad R., and Masoud Farzaneh. "Evaluation of Mechanisms of Ice Adhesion on Power Network Equipment." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51267.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The objective of this study is to review the mechanisms of ice adhesion to cables and insulators, with a special emphasis on aluminum and ceramic materials, as these devices are made from these materials. This review shows that the physico-chemical interactions and mechanical interlock contribute to the mechanisms of ice adhesion to surfaces. The physico-chemical mechanisms of ice adhesion to surfaces are classified into three main categories: dipole-dipole or ion-dipole interactions; hydrogen bond; and van der Waals interactions. The interfacial adhesion strength of ice/metals or ice/ceramic insulators is greater than the strength of ice. This indicates that the strength between ice and the material surfaces is greater than hydrogen bonds of ice itself. The mechanical mechanism involves the penetration of liquid water into cavities and pores on the surface of the substrate and expansion of ice during solidification, resulting in an anchor effect and the establishment of a strong bond between ice and surface.
4

Lindström, Tom. "Some Fundamental Chemical Aspects on Paper Forming." In Fundamentals of Papermaking, edited by C. F. Baker and V. Punton. Fundamental Research Committee (FRC), Manchester, 1989. http://dx.doi.org/10.15376/frc.1989.1.311.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The fundamental physico-chemical aspects of retention chemistry are reviewed in the light of basic concepts in colloid chemistry. Special emphasis has been paid to the surface chemistry of cellulose and cellulosic materials, their origin of charge, dispersion force interactions as well as the implication of certain aspects of peculiar cellulosic surfaces, e.g. the influence of their porosity on polymer adsorption. Charge neutralization, patch flocculation, heterocoagulation, bridging and complex flocculation phenomena are discussed as well as polymer adsorption phenomena at the cellulose/water interface
5

Plank, Johann, Nils Recalde Lummer, and Fatima Dugonjic-Bilic. "Physico-Chemical Interactions Perturbing the Effectiveness of an ATBS-Based Fluid Loss Polymer Used in Oil Well Cementing." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2009. http://dx.doi.org/10.2118/121541-ms.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Jiang, Lan, and Hai-Lung Tsai. "A Combined Model and Its Verification for Femtosecond-Pulse Materials Interactions." In 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2008. http://dx.doi.org/10.1115/micronano2008-70127.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
This paper reports the overall picture of our ongoing efforts to establish the scientific understanding of ultrafast, non-equilibrium laser-material interactions from nanometer to milimeter and from femtosecond to microsecond through comprehensive, integrated multiscale physico-chemical modeling and experimental verification. A novel plasma model with quantum treatments is developed to account for significantly varying optical properties. The model is used to successfully predict two uncommon phenomena that is experimentally observed: 1) a flat-bottom crater shape created by a Gaussian beam and 2) repeatable nanoscale structures achieved by pulse train technology. The well known two-temperature model is improved by considering the quantum effects of different heat carriers and then is used to accurately predict the damage thresholds for metals. Preliminary results for these ongoing modeling efforts are reported in this article.
7

Zhou, Jack G., Alan Ostrow, and Parkson Lee-Gau Chong. "Concurrent Design, Analysis and Prototype of a High Pressure Optical Cell for Physico-Chemical Studies of Biological Systems." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0004.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Abstract The commercially available high pressure optical cells, used in biological research, can only satisfy a limited range of experimental requirements. Current high pressure cell designs only allow for the measurement of single samples, thus limiting the data which researchers can obtain. We present a new design which enables users to introduce a second component to the original sample, while both components are under high pressure. This allows researchers to observe initial molecular interactions at high pressure via fiber optics and record data which was previously unobtainable. The design innovation which distinguishes the high pressure optical cell from existing models is the introduction of a laser-activated stopper system, which separates the two biological samples until the experimenter is ready to mix them. Concurrent Engineering methodologies and tools were used in conjunction with theoretical analysis to develop this innovative system. A high pressure cell prototype was built to further verify the new design and explore new challenges.
8

Richter, Anke, Vinzenz Brendler, Cordula Nebelung, Timothy E. Payne, and Thomas Brasser. "Sorption Databases for Increasing Confidence in Performance Assessment." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16053.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
World-wide activities focus on the remediation of radioactively contaminated sites. One common aim is to deliver a more profound chemical base for risk assessment, namely all those physico-chemical phenomena governing the contamination plume development in time and space. Coupled transport codes able to tackle this challenge have to simplify the resulting very complex reaction pattern. To do so in an adequate way requires extending the knowledge about retardation and mobilisation phenomena and the underlying basic processes and interactions (e.g. physisorption, chemisorption, surface precipitation). Interactions at the solid-liquid interface can be described by complementary approaches, the empirical Kd concept and the mechanistic Surface Complexation Models (SCM). Kd’s are used by most reactive transport and risk assessment codes due to the straightforward numerics involved. In addition, the Kd concept is often the only feasible option for complex solid phases. However, the Kd concept is a rather simplistic approach. Many very different basic physico-chemical phenomena are subsumed in just one conditional parameter. Therefore, extrapolating Kd values may yield very large uncertainties. SCM account adsorption of ions on surface sites as complexation reaction comparable to complexation in solution. The electrical charge at the surface is determined by the chemical reactions of the mineral functional groups, including acid-base reactions and formation of ion pairs and coordinative complexes. The required parameters are site-independent and applicable despite large variations in geochemical conditions. This presents a high potential to increase confidence in safety analysis and risk assessment studies (performance assessment). The mechanistic description of sorption processes with SCM allows a thermodynamically consistent calculation of the species distribution between liquid and solid phase combined with more reliable inter- and extrapolations. However, this requires that all mineral constituents of the solid phase are characterized. Another issue is the large number of required parameters combined with time-consuming iterations. Addressing both approaches, we present two sorption databases, developed mainly by or under participation of the Forschungszentrum Dresden-Rossendorf (FZD). Both databases are implemented as relational databases, assist identification of critical data gaps and the evaluation of existing parameter sets, provide web based data search and analyses and permit the comparison of SCM predictions with Kd values. RES3T (Rossendorf Expert System for Surface and Sorption Thermodynamics) is a digitized thermodynamic sorption database (see www.fzd.de/db/RES3T.login) and free of charge. It is mineral-specific and can therefore also be used for additive models of more complex solid phases. ISDA (Integrated Sorption Database System) connects SCM with the Kd concept but focuses on conventional Kd. The integrated datasets are accessible through a unified user interface. An application case, Kd values in Performance Assessment, is given.
9

Majcherczak, D., P. Dufrenoy, and Y. Berthier. "Experimental Thermal Study of Contact With Third Body." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63363.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The thermal study of sliding contact is complex due to numerous physical aspects highly coupled. Heat generation mechanisms are still badly known due to the complex interactions between mechanical, thermal and physico-chemical behaviours and surface degradations. In the goal to better appreciate the third body role on the thermal aspect, an experimental set-up has been realized. It consists in two rings sliding to each other, the first one is made of sapphire (rotating ring) and the second one is made of steel (fixed ring). The temperatures are obtained by an infrared camera scanning through the sapphire and by thermocouples on the contact surface specially realized for this experimental setup. The contact surfaces of the two rings have been observed with a scanning electronic microscope. Comparison between the thermal scene and the surface observations has allowed connecting the third body accumulation with local surface heating.
10

Banneyake, B. M. R. U., and Debjyoti Banerjee. "Microfluidic Device for Synthesis of Lipid Bi-Layers." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55219.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Lipid bi-layers are ubiquitous components of biological cells — and are found in variety of cell components ranging from cell membranes to membranes of organelles inside the cells. In biological membranes, lipid bi-layer membranes carry membrane proteins, which serve as single channel nanopores that are used to study transport of proteins and characterize the properties of proteins. However, lipid bi-layers have very short half lives, which are usually less than an hour. The lipid bi-layers are usually obtained by physico-chemical interactions between a lipid containing organic solvent, an aqueous buffer solution and a hydrophobic surface. We have developed a continuous flow through microfluidic device using pressure driven flow (by means of a tandem syringe pump system) for synthesis of lipid bi-layers. The microfluidic device consists of two glass substrates with micro-channels and microchambers microfabricated using photolithography and wet glass etching. The microchannels in each substrate is in the form of “+” shape and form a mirror image of each other. A Teflon sheet (∼200 microns thickness) is sandwiched between the glass substrates with a ∼200 microns diameter hole etched in the center to communicate with the two sets of microchannels. A lipid solution in an organic solvent (Pentane) and KCl buffer solution are alternately flown through the legs of the microchannel. The conductivity of the buffer is monitored using a current amplifier. The formation of the lipid bi-layer is confirmed by monitoring the resistivity and the impedance to high frequency electrical oscillations. The flow rate in the microfluidic device is optimized to obtain the lipid bi-layer.

Звіти організацій з теми "Physico-Chemical interactions":

1

Loyalka, S. K., and R. V. Tompson. Measurements of physico-chemical properties and interactions of nuclear reactor aerosols. Progress performance report, September 30, 1992--March 22, 1993. Office of Scientific and Technical Information (OSTI), March 1993. http://dx.doi.org/10.2172/373926.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

До бібліографії