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Gotowa bibliografia na temat „CCHT”

Autor: Grafiati

Data publikacji: 29 sierpnia 2023

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Artykuły w czasopismach na temat "CCHT"

Ghi, Maria Grazia, Adriano Paccagnella, Daris Ferrari, Paolo Foa, Franco Nole, Franco Morelli, Giuseppe Azzarello i in. "Cetuximab/radiotherapy (CET+RT) versus concomitant chemoradiotherapy (cCHT+RT) with or without induction docetaxel/cisplatin/5-fluorouracil (TPF) in locally advanced head and neck squamous cell carcinoma (LASCCHN): Preliminary results on toxicity of a randomized, 2x2 factorial, phase II-III study (NCT01086826)." Journal of Clinical Oncology 30, nr 15_suppl (20.05.2012): 5513. http://dx.doi.org/10.1200/jco.2012.30.15_suppl.5513.

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5513 Background: The standard treatment options for LASCCHN are cCHT+RT or CET+RT. Strategies to improve the efficacy with the integration of induction chemotherapy are being investigated. Primary endpoints of this study were to compare: 1) the overall survival (OS) of induction vs. no induction arms; 2) the Grade(G)3-4 in-field toxicity of cCHT+RT vs. CET+RT. Methods: Patients (pts) with unresectable LASCCHN, stage III-IV, ECOG PS 0–1 were randomized to a 2x2 factorial design: Arm A1: cCHT+RT (2 cycles of ciplatin/5fluorouracil); Arm A2: CET+RTX; Arm B1: 3 cycles of TPF followed by the same cCHT+RT; Arm B2: 3 cycles of TPF followed by CET+RT. A total of 204 deaths over 420 pts ( including the 101 randomized in the phase II part of the study comparing cCHT+RT with or w/o induction TPF) were required to detect a HR of death of 0.675 (A1+A2 vs. B1+B2; 2-sided a=0.05; b=0.20) and a 10% difference in G3-4 in-field mucosal toxicity (A1+B1 vs. A2+B2). Results: By February 2012, 387 pts over 413 pts were evaluable for toxicity. 82% of pts were male; median age was 60y; PS: 0=77.8% and 1=22.2%. Disease stage was III (31%) or IV (69%). Sites of disease were oral cavity (21.7%), oropharynx (54.8%), hypopharynx (23.5%). At a median follow-up of 21 months, 126 deaths occurred. Data on G3-4 in-field toxicity (primary endpoint) and compliance to cCHT+RT vs CET+RT are shown in the table. Conclusions: No advantage for CET+RT over cCHT+RT was observed regarding G3-4 in-field toxicities and feasibility. Pts are still being followed-up to assess OS. [Table: see text]

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Tasic, Lidija, Radica Dunjic, Mladenko Vasiljevic, Svetlana Dikic, Aleksandar Jurisic i Dijana Tasic. "Comparison of two different types of hormone therapy effects on haemostatic parameters in early postmenopausal women". Srpski arhiv za celokupno lekarstvo 139, nr 1-2 (2011): 52–57. http://dx.doi.org/10.2298/sarh1102052t.

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Introduction. Most postmenopausal women have some of menopausal symptoms due to oestrogen deprivation. Many therapeutic options are available for managing menopausal problems. However, hormone therapy is associated with a heightened risk for thromboembolic events. Objective. To investigate the effects of different types of hormone therapy on some haemostatic parameters. Methods. This randomized, controlled study included 56 healthy, early postmenopausal women aged 46-58 years on different types of hormone therapy (tibolone 2.5 mg/day, 25 women, or CCHT 2 mg estradiol plus 1 mg norethisteron acetate, 31 women) and 20 healthy postmenopausal women of the same age receiving placebo. Effects of these 2 medicaments on some haemostasis parameters were measured 3 and 6 months after the onset of treatment. Results. Short-term use (3 months) of both tibolone and CCHT had a detrimental effect on antithrombin, protein C and protein S levels (decreased), and even more so in the group treated with CCHT. Plasminogen-activator inhibitor type 1 levels were decreased by both tibolone and CCHT, but more so by CCHT; thrombin-antithrombin complex were increased in both groups. There were no changes in haemostatic parameters between 3-month and 6-month treatment in any group. Conclusion. Both therapeutic options are associated with an activation of thrombogenic and fibrinolytic markers within 3 months of use. Tibolone appears to produce a better balance between thrombogenesis and fibrinolysis. Since our results show a lower incidence of thrombotic events, further studies are required.

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Musteata, Vasile, Lilian Nichifor, Larisa Musteata i Galina Durbailova. "Diagnosis Issues and Management of Nasopharyngeal Non-Hodgkin Lymphomas". Blood 138, Supplement 1 (5.11.2021): 4588. http://dx.doi.org/10.1182/blood-2021-144340.

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Abstract Background: Non-Hodgkin lymphomas (NHL) comprise a variety of lymphoproliferative malignancies with certain differences related to the morphological, clinical, immunohistochemical and hematological patterns, as well as the results of treatment. The patients with generalized and relapsed nasopharyngeal NHL experience marked disease burden and unfavorable impact on their life quality and working capacity. Objective: The aim of the study was to characterize the diagnosis issues of NHL with primary involvement of the nasopharynx and evaluate the short- and long-term results of management options. Materials and methods: This analytical and cohort study included 66 patients with different stages of nasopharyngeal NHL, who were managed at the Institute of Oncology from Moldova between 2014-2021. The diagnosis was confirmed by cytological, histopathological and immunohistochemical examinations. The histological types of NHL were verified and distinguished according to the 2017 Revision of WHO Classification of Tumors of Hematopoietic and Lymphoid Tissues. The patients treatment, follow-up and researches were realized at the comprehensive cancer center. The study was related to the hospitalized care. The patients age ranged between 19-85 years (average age - 58.4±2,14 years). Males were 28 (42%), females - 38 (58%). Stage I NHL was diagnosed in 10 (15.2%) cases, stage II - in 36 (54.5%), stage III - in 8 (12.1%) and stage IV - in 12 (18.2%). The eligible NHL patients underwent combined chemotherapy (CChT) regimens (CVChlP, R-CVChlP, CHOP and R-CHOP), associated with radiotherapy locoregional treatment in cases of bulky disease or residual tumor masses. The ECOG-WHO score and complete response (CR) rate assessed the short-term results. The long-term results were asserted by the overall one- and 5-year survival. Results: Primary nasopharyngeal NHL occurred commonly in females (58%) and in patients over 60 years (42.4%). The ECOG-WHO score accounted 1-3 at diagnosis. The aggressive NHL were diagnosed mostly (76.1%) in stage I and II due to the earlier developed disease burden. The primary tumor site was localized in the palatine tonsils in 22 (33.3%) patients, in 33 (50%) patients in the pharyngeal tonsil, in 2 (3%) patients in the lingual tonsil. The palatine and pharyngeal tonsils were concomitantly involved in 9 (13.7%) patients. Palatine tonsil involvement occurred mostly in patients over 60 years old, and pharyngeal tonsil involvement - in patients of 40-59 years. CR was achieved in 10 (100%) cases with stage I after combined chemotherapy (CChT) and radiotherapy locoregional treatment. CR occurred in 21 (67.7%), partial response (PR) - in 7 (22.6%) and response failure (RF) - in 3 (9.7%) in stage II NHL after CChT and radiotherapy locoregional treatment. In stage II NHL treated with CChT along, CR was achieved in 1 (25%), PR - in 2 (50%) and RF in 1 (25%). In stage III treated with CChT and radiotherapy locoregional treatment, CR was registered in 1 (20%), PR - in 2 (40%) and RF - in 2 (40%). PR occurred in 2 (66.7%), RF - in 1 (33.3%) in stage III managed with CChT alone. In stage IV NHL, CR was obtained 1 (11.1%) case, PR - in 5 (55.6%), RF - in 3 (33.3%) after CChT and radiotherapy locoregional treatment. PR occurred in 1 (33.3%), RF - in 2 (66.7%) cases in stage IV patients managed with CChT alone. No significant differences of CR rate were found in stage III (12,5%) and stage IV (8.3%) NHL (P>0.05). Irrespective of the stage, the highest CR rate was registered after CChT and radiotherapy locoregional treatment (97.1% of all cases), as compared to CChT alone (2.9% of all cases). The ECOG-WHO score reached 0-1 under the management with CChT and radiotherapy locoregional treatment in all cases with CR and PR. The overall survival was 79.9% at one year and 34.5% at 5 years. One- and 5-year survival proved to be significantly higher în stage I and II NHL - 96.1% and 64.2% respectively. One- and 5-year survival was 79.9% and 34.5% in stage III and IV NHL. Conclusions: Primary nasopharyngeal NHL were outlined by the predominant involvement of females, patients over 60 years and frequent site in the pharyngeal tonsil. The aggressive NHL were revealed commonly in stage I and II due to the progressive disease burden. The rates of the indolent and aggressive NHL turned out to be statistically equal in stage III and IV. The response and overall survival rates proved to be superior after R-CHOP regimen followed by the radiotherapy locoregional treatment. Disclosures No relevant conflicts of interest to declare.

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Barnett, Tracey E., Neale R. Chumbler, W. Bruce Vogel, Rebecca J. Beyth, Patricia Ryan i Sarita Figueroa. "The cost-utility of a care coordination/home telehealth programme for veterans with diabetes". Journal of Telemedicine and Telecare 13, nr 6 (1.09.2007): 318–21. http://dx.doi.org/10.1258/135763307781644843.

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We examined the cost-effectiveness of a care coordination/home telehealth (CCHT) programme for veterans with diabetes. We conducted a retrospective, pre-post study which compared data for a cohort of veterans ( n=370) before and after the introduction of the CCHT programme for two periods of 12 months. To assess the cost-effectiveness, we converted the patients' health-related quality of life data into Quality Adjusted Life Year (QALY) utility scores and used costs to construct incremental cost-effectiveness ratios (ICERs). The overall mean ICER for the programme at one-year was &dollar;60,941, a value within the commonly-cited range of cost-effectiveness of &dollar;50,000–100,000. The programme was cost-effective for one-third of the participants. Characteristics that contributed to cost-effectiveness were marital status, location and clinically relevant co-morbidities. By targeting the intervention differently in future work, it may become cost-effective for a greater proportion of patients.

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Torelli, P., D. Cologno, C. Cademartiri i GC Manzoni. "Primary and Secondary Chronic Cluster Headache: Two Separate Entities?" Cephalalgia 20, nr 9 (listopad 2000): 826–29. http://dx.doi.org/10.1046/j.1468-2982.2000.00127.x.

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The International Headache Society (IHS) classification divides chronic cluster headache (CH) into two subtypes: chronic CH unremitting from onset (CCHU) and chronic CH evolved from episodic (CCHE). The purpose of our study was to point out any similarities and differences between the two chronic CH subtypes and to determine whether or not they can be considered as two separate clinical entities. We reviewed data about 31 CCHE patients and 38 CCHU patients referred to the Parma Headache Centre between 1975 and 1999. Clinically, CCHE patients exhibited statistically significant differences from CCHU patients, i.e. earlier CH onset and duration of attacks varying more frequently between 120 and 180 min. From the point of view of lifestyle, heavy alcohol and coffee drinkers prevailed among CCHU patients, while CCHE patients were more frequently heavy smokers. Based on clinical features, it seems reasonable to suppose that chronic CH may occur as two distinct entities.

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Kumar, Raman, i Nonika Singla. "Cryptanalytic Performance Appraisal of Improved CCH2 Proxy Multisignature Scheme". Mathematical Problems in Engineering 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/429271.

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Many of the signature schemes are proposed in which thetout ofnthreshold schemes are deployed, but they still lack the property of security. In this paper, we have discussed implementation of improved CCH1 and improved CCH2 proxy multisignature scheme based on elliptic curve cryptosystem. We have represented time complexity, space complexity, and computational overhead of improved CCH1 and CCH2 proxy multisignature schemes. We have presented cryptanalysis of improved CCH2 proxy multisignature scheme and showed that improved CCH2 scheme suffered from various attacks, that is, forgery attack and framing attack.

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Afzali, Sayed Fakhreddin, Bijan Azad, Mohammad H. Golabi i Rosa Francaviglia. "Using RothC Model to Simulate Soil Organic Carbon Stocks under Different Climate Change Scenarios for the Rangelands of the Arid Regions of Southern Iran". Water 11, nr 10 (10.10.2019): 2107. http://dx.doi.org/10.3390/w11102107.

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Soil organic carbon (SOC) is strongly influenced by climate change, and it is believed that increased temperatures might enhance the release of CO2 with higher emission into the atmosphere. Appropriate models may be used to predict the changes of SOC stock under projected future scenarios of climate change. In this investigation, the RothC model was run for a period of 36 years under climate scenarios namely: P (no climate change) as well as CCH1 and CCH2 (climate change scenarios) in the arid rangelands of Ghir–O-Karzin’s BandBast in southern Iran. Model results have shown that after 11 years (2014–25), SOC stock decreased by 3.05% under the CCH1 scenario (with a projected annual precipitation decrease by 6.69% and mean annual temperature increase by 9.96%) and by 0.23% under the P scenario. In CCH2, with further decreases in rainfall (10.93%) and increase in temperature (12.53%) compared to CCH1, the model predicted that the SOC stock during the 25 years (2025–50) was reduced by 2.36% and 3.53% under the CCH1 and CCH2 scenario respectively. According to model predictions, with future climatic conditions (higher temperatures and lower rainfall) the decomposition rate may increase resulting in higher losses of soil organic carbon from the soil matrix. The result from this investigation may also be used for developing management techniques to be practiced in the other arid rangelands of Iran with similar conditions.

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Yoo, Yeong, Yousef Al-Shawesh i Alain Tchagang. "Coordinated Control Strategy and Validation of Vehicle-to-Grid for Frequency Control". Energies 14, nr 9 (28.04.2021): 2530. http://dx.doi.org/10.3390/en14092530.

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The increased penetration of renewable energy sources (RES) and electric vehicles (EVs) is resulting in significant challenges to the stability, reliability, and resiliency of the electrical grid due to the intermittency nature of RES and uncertainty of charging demands of EVs. There is a potential for significant economic returns to use vehicle-to-grid (V2G) technology for peak load reduction and frequency control. To verify the effectiveness of the V2G-based frequency control in a microgrid, modeling and simulations of single- and multi-vehicle-based primary and secondary frequency controls were conducted to utilize the integrated components at the Canadian Centre for Housing Technology (CCHT)-V2G testing facility by using MATLAB/Simulink. A single-vehicle-based model was validated by comparing empirical testing and simulations of primary and secondary frequency controls. The validated conceptual model was then applied for dynamic phasor simulations of multi-vehicle-based frequency control with a proposed coordinated control algorithm for improving frequency stability and facilitating renewables integration with V2G-capable EVs in a microgrid. This proposed model includes a decentralized coordinated control of the state of charge (SOC) and charging schedule for five aggregated EVs with different departure times and SOC management profiles preferred by EV drivers. The simulation results showed that the fleet of 5 EVs in V2B/V2G could effectively reduce frequency deviation in a microgrid.

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Guo, Jianhui, Tiyun Wu, Bradley F. Kane, Donald G. Johnson, Louis E. Henderson, Robert J. Gorelick i Judith G. Levin. "Subtle Alterations of the Native Zinc Finger Structures Have Dramatic Effects on the Nucleic Acid Chaperone Activity of Human Immunodeficiency Virus Type 1 Nucleocapsid Protein". Journal of Virology 76, nr 9 (1.05.2002): 4370–78. http://dx.doi.org/10.1128/jvi.76.9.4370-4378.2002.

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ABSTRACT The nucleocapsid protein (NC) of human immunodeficiency virus type 1 has two zinc fingers, each containing the invariant CCHC zinc-binding motif; however, the surrounding amino acid context is not identical in the two fingers. Recently, we demonstrated that zinc coordination is required when NC unfolds complex secondary structures in RNA and DNA minus- and plus-strand transfer intermediates; this property of NC reflects its nucleic acid chaperone activity. Here we have analyzed the chaperone activities of mutants having substitutions of alternative zinc-coordinating residues, i.e., CCHH or CCCC, for the wild-type CCHC motif. We also investigated the activities of mutants that retain the CCHC motifs but have mutations that exchange or duplicate the zinc fingers (mutants 1-1, 2-1, and 2-2); these changes affect amino acid context. Our results indicate that in general, for optimal activity in an assay that measures stimulation of minus-strand transfer and inhibition of nonspecific self-priming, the CCHC motif in the zinc fingers cannot be replaced by CCHH or CCCC and the amino acid context of the fingers must be conserved. Context changes also reduce the ability of NC to facilitate primer removal in plus-strand transfer. In addition, we found that the first finger is a more crucial determinant of nucleic acid chaperone activity than the second finger. Interestingly, comparison of the in vitro results with earlier in vivo replication data raises the possibility that NC may adopt multiple conformations that are responsible for different NC functions during virus replication.

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Venturini, R. S., S. Carvalho, C. C. Pires, P. S. Pacheco, A. C. R. S. Pellegrin, A. B. Moro, J. F. Lopes i in. "Consumo e desempenho de cordeiros e borregos alimentados com dietas de alto concentrado de milho ou sorgo". Arquivo Brasileiro de Medicina Veterinária e Zootecnia 68, nr 6 (grudzień 2016): 1638–46. http://dx.doi.org/10.1590/1678-4162-8856.

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RESUMO Objetivou-se avaliar os consumos de matéria seca, nutrientes e desempenho na terminação de cordeiros e borregos submetidos a dietas de alto concentrado de grão de milho ou sorgo. Foram utilizados 32 animais, sendo 16 cordeiros (dente de leite) e 16 borregos (dois dentes) da raça Corriedale. As dietas eram constituídas de feno de aveia- branca (Avena sativa), grão de milho (Zea mays) ou de sorgo (Sorghum bicolor (L.) Moench), farelo de soja (Glycine Max), calcário calcítico, bicarbonato de sódio e monensina. Os cordeiros apresentaram superioridade (P≤0,05) quanto ao CMS (% do PV e g/kg PV0,75), ao CPB (kg/dia, % do PV e g/kg PV0,75), ao CEE (% do PV), ao CFDN e ao CFDA (% do PV e g/kg PV0,75), ao CNDT (% do PV), ao ganho de peso médio diário, à conformação in vivo e à conversão alimentar. Por outro lado, o CEE, o CCHT e o CCNE (kg/dia), o peso vivo inicial, o peso vivo final e o peso vivo ao abate foram superiores (P≤0,05) na categoria dos borregos. Em relação aos grãos avaliados, verificou-se maior (P≤0,05) CEE (kg/dia, % do PV e g/kg PV0,75) e menor (P≤0,05) CFDN (% do PV) e CFDA (kg/dia, % do PV e g/kg PV0,75) para os animais alimentados com dieta de alto concentrado à base de grão de milho em relação àqueles alimentados com grão de sorgo. Os cordeiros apresentam consumos relativos superiores aos borregos, porém sua resposta zootécnica é maior. O uso de dietas de alto concentrado de sorgo ou de milho proporcionou resultados semelhantes.

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Rozprawy doktorskie na temat "CCHT"

Paquin, Jean-Nicolas. "Réalisation d'un modèle d'interconnexion CCHT sous EMTP-RV". Mémoire, École de technologie supérieure, 2007. http://espace.etsmtl.ca/597/1/PAQUIN_Jean%2DNicolas.pdf.

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Ce document traite de la réalisation d'une interconnexion CCHT sous EMTP-RV. Les travaux effectués dans ce domaine sont tout d'abord passés en revue. La problématique liée à cette technologie est ensuite présentée. Subséquemment, les divers éléments et les systèmes de commande et de protection développés dans le modèle sont détaillés. Les actions portées par les systèmes de protection lors de divers types de défauts sont ensuite mises en évidence. Une validation complète du modèle est présentée. Tout d'abord, ce dernier est comparé avec celui existant sous SPS, une librairie de Matlab/Simulink. Ensuite, la robustesse des commandes et protections est mise à l'épreuve par la simulation du modèle de référence du CIGRÉ dont les conditions d'opération sont sévères. Finalement, le comportement général du modèle en présence de multiples perturbations est analysé à l'aide de résultats obtenus de la simulation de l'interconnexion en configuration bipolaire.

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Bertolucci, Miguel. "Étude et développement d'une représentation des systèmes de transport d'énergie en CCHT par des fonctions de conversion /". Thèse, Trois-Rivières, Université du Québec à Trois-Rivières, 1999. http://www.uqtr.ca/biblio/notice/resume/03-2205960R.html.

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Bertolucci, Miguel. "Étude et développement d'une représentation des systèmes de transport d'énergie en CCHT par des fonctions de conversion". Thèse, Université du Québec à Trois-Rivières, 1999. http://depot-e.uqtr.ca/3353/1/000663233.pdf.

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Ngo, Hoang-Trung. "Control of power electronics of future smart grids for ancillary services". Electronic Thesis or Diss., Ecole centrale de Nantes, 2023. http://www.theses.fr/2023ECDN0008.

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Afin de fournir des services système etde gérer les intéractions entre convertisseurs, cettethèse a proposé une technique de commandecoordonnée pour les systèmes de convertisseurs depuissance connectés au réseau, avec desimplémentations centralisées et décentralisées. Lesnouvelles structures de commande proposées sontdivisées en différents niveaux de commande/bouclesen fonction de la dynamique naturelle du système : laboucle très rapide est utilisée pour fournir desservices locaux (puissance active/réactive, tensionCC, et inertie du réseau / RoCoF support), la bouclerapide est pour MPPT, la réponse en fréquence et lesservices de tension CA, et la boucle lente estconstituée par sert les commandes secondaires de lafréquence et de la tension. À cet égard, ce contrôleest une alternative à la commande vectorielleclassique. De plus, des techniques de commandeavancées comme H2/H-infini, des approches flouesnon linéaires et des techniques d’IMT, sont utiliséespour obtenir des performances optimales tout enmaintenant une marge de stabilité (p. ex., FRT etCCT). Trois applications ont été traitées :commande décentralisée VSC-CCHT (non linéaire),commande décentralisé/centralisé du systèmeéolien PMSG (non linéaire) raccordé au réseau etcommande en tension (STATCOM) d’unconvertisseur connecté au réseau. La mise enoeuvre décentralisée renforce la résilience lors de lacommande de plusieurs générateurs d’énergierenouvelable, comme dans le concept de centraleélectrique virtuelle dynamique développé dans leprojet H2020 RIA POSYTYF. Les résultats ontdémontré que les structures de commandeproposées sont plus performantes que lacommande vectorielle classique en termes destabilité et de performance. Cette thèse présenteégalement une méthode de conception de systèmede commande conviviale sur la base des approchesprésentées, qui peut ensuite être appliquée auxapplications au niveau industriel
In order to provide ancillary servicesand handling coupling between converters, thisthesis proposed a coordinated control technique forpower converter systems connected to the grid, withboth centralised and decentralised implementations.The new proposed control structures are divided intodifferent control levels/loops based on the system’snatural dynamics: the very fast loop is used toprovide local services (active/reactive power, DCvoltage, and grid inertia/ RoCoF support), the fastloop is for MPPT, frequency response, and ACvoltage services, and the slow loop is for secondaryfrequency and voltage control. In this regard, suchcontrol is an alternative to traditional vector control.Furthermore, advanced control techniques includingMIMO state-space, resilient and optimal H2/H-infinitycontrol, nonlinear fuzzy approaches, and LMItechniques are used to obtain optimal performancewhile maintaining a stability margin (e.g., FRT andCCT). There are 3 applications: VSC-HVDC(nonlinear) decentralised control, grid-connectedwind system PMSG (nonlinear)decentralized/centralized control, and a gridconnectedSTATCOM LMI-based pole-placementcontrol. Decentralized implementation enhancesresilience when controlling several renewablegenerators, such as in the Dynamic Virtual PowerPlant concept developed in the H2020 RIAPOSYTYF project. The results demonstrated thatthe proposed control structures outperform classicalvector control in terms of stability and performance.This thesis also presents an engineering-friendlycontrol system design method based on thepresented approaches, which can then be appliedto industrial-level applications

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Sethakul, Panarit. "Réseaux électriques et filtrage des harmoniques : mise en œuvre et méthode d’étude". Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL083N/document.

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Cette thèse s’intéresse au problème de la qualité de l’énergie électrique sous l’angle particulier des harmoniques, leurs sources, leurs effets et les solutions permettant de les réduire. Deux solutions sont principalement considérées, les convertisseurs à indice de pulsation élevé et les filtres actifs. Ce travail a été mené en faisant porter l’accent sur le réseau électrique thaïlandais. C’est ainsi qu’une présentation de l’évolution de la façon dont l’électricité est produite, transportée et distribuée en Thaïlande est effectuée avant de décrire les contraintes imposées sur les harmoniques. Les différents systèmes de liaison à courant continu haute tension (CCHT) actuellement installés dans le monde sont rappelés avant de décrire en détails les différents composants et le contrôle de la liaison 300-600 MW existant entre la Thaïlande et la Malaisie. Après avoir ensuite présenté les différentes solutions envisageables de réduction des harmoniques, un exemple de réalisation, l’une des premières en Thaïlande utilisant un contrôle numérique, est détaillé afin d’illustrer les avantages de ce type de solution. La thèse se termine sur la présentation d’une méthode originale de modélisation des convertisseurs à indice de pulsation élevé. Cette modélisation repose sur une solution analytique exacte du problème d’état qui est considéré sur le plus petit intervalle permettant, en utilisant des propriétés de symétrie, de reconstruire la période de fonctionnement du dispositif. Le modèle ainsi développé donne des informations sur le fonctionnement du système tant dans les domaines fréquentiel que temporel
The problem of quality of electrical energy is the main object of this thesis. This problem is considered especially from the point of view of harmonics, sources, effects and solutions to reduce them. Two main solutions are considered, multi-pulse converters and active filters. This work is developed with a particular emphasis on the Thai electrical network. Then, the production, transmission and distribution system of electricity in Thailand and the harmonics regulations are presented. The different types of HVDC interconnection systems which are installed in the world today are detailed before presenting the 300/600 MW Thailand-Malaysia HVDC interconnection. After presenting the different possible solutions to avoid harmonics, a realized example, one of the first one developed in Thailand with a numerical control, is detailed to show the advantages of such a solution. The thesis ends on the presentation of an original modelling method of multi-pulse converters. The model is based on an exact analytical solution of the state problem which is considered on the smallest interval, which can, by using property of symmetry, rebuild the whole period. The result model gives the full information on the operation of the whole device both in time and frequency domains

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Špaček, Matěj. "Návrh manipulátoru vzorku pro CCHM mikroskop". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444981.

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In the Laboratory of the Experimental Biophotonics at Brno University of Technology, a new generation of the Coherence-Controlled Holographic Microscope (CCHM) is being developed. Because of the automation of certain microscope procedures, a fully motorized three axis computer controlled manipulator of the sample is to be employed. A fast and accurate lateral positioning in a range of several centimeters is required. For the focusing capability, very precise positioning in the optical axes is required as well. Initially, the basics of microscope manipulator design are presented. Then, commercially available solutions are introduced and compared with special focus on its possible implementation in the new generation of CCHM. However, due to the specific design of the new CCHM, available manipulators are not suitable. Therefore, a new optimized manipulator design is introduced in the second part of the thesis. A selection of its appropriate elements, especially actuators, is based on a review. For the new manipulator design, a technical documentation was made and a testing software was developed. A crucial part of the manipulator was assembled and tested.

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Gao, Yu. "Innovative Self-Centering Connection for CCFT Composite Columns". Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/78390.

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Concrete filled steel tubes are regarded as ideal frame members in seismic resisting systems, as they combine large axial and flexural capacity with ductility. The combination of the two materials increases the strength of the confined concrete and avoids premature local buckling of the steel tube. These benefits are more prominent for circular than for rectangular concrete filled steel tubes. However, most common connection configurations for circular concrete filled tubes are not economic in the US market due to (a) the desire of designers to use only fully restrained connections and its associated (b) high cost of fabrication and field welding. Research indicates that well designed partially restrained connections can supply equal or even better cyclic behavior. Partially restrained connections also possess potential capability to develop self-centering system, which has many merits in seismic design. The goal of this research is to develop a new connection configuration between circular concrete filled steel columns and conventional W steel beams. The new connection configuration is intended to provide another option for rapid assembling on site with low erection costs. The proposed connection is based on an extended stiffened end plate that utilizes through rods. The rods are a combination of conventional steel and shape memory alloy that provide both energy dissipation and self-centering capacity. The new connection configuration should be workable for large beam sizes and can be easily expanded to a biaxial bending moment connection.
Ph. D.

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Medina, Porcile Catalina. "CCAT-prime telescope holography simulations and surface error analysis". Tesis, Universidad de Chile, 2019. http://repositorio.uchile.cl/handle/2250/170183.

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Tesis para optar al grado de Magíster en Ciencias de la Ingeniería, Mención Eléctrica
Memoria para optar al título de Ingeniera Civil Eléctrica
El radio-telescopio CCAT-prime (CCAT-p) será construido en el Cerro Chajnantor a 5.600 m.s.n.m en la Región de Antofagasta, Chile. Este telescopio tendrá una configuración CrossedDragone con dos reflectores de 6 m. Esta configuración le otorga un amplio campo de visión con el que podrá iluminar más de 105 detectores. El rango de operación del CCAT-p comprende longitudes de onda desde los 350 µm hasta los 3.100 µm, y en las mejores condiciones climáticas podrá llegar hasta la ventana de 200 µm. Para operar a estas longitudes de onda se necesita que la superficie de los reflectores tenga una alta precisión, por lo que se ha impuesto una meta para el error medio de frente de ondas entre 7 y 10 µm RMS. Los reflectores del telescopio serán construidos mediante un set de paneles que en conjunto conformarán el perfil deseado. Para lograr la precisión requerida, se necesitará implementar un método de medición de errores en la superficie de los reflectores. Se ha escogido con este fin la técnica de holografía de ondas milimétricas. La implementación de técnicas de holografía para el CCAT-p presenta desafíos, debido principalmente a su ubicación, a su configuración óptica y al alto nivel de precisión deseado. Se utilizará una fuente artificial a 300 m del telescopio, lo cual corresponde a su campo cercano , por lo que se necesita estudiar el comportamiento del patrón de radiación a esta distancia. En este trabajo se hacen simulaciones tanto en campo cercano como en campo lejano, bajo distintos escenarios, para así generar datos del comportamiento del telescopio ante estas circunstancias. Por otro lado, ya que el telescopio consta de dos grandes reflectores, el error medido por el sistema de holografía corresponderá a las contribuciones de los errores en la superficie de cada reflector. Para identificar y separar la contribución de cada reflector se propone utilizar los efectos de paralaje sobre la ubicación de los errores producidos al medir en distintas posiciones del plano focal. En este trabajo cada simulación se mide en 4 posiciones distintas del plano focal. Mediante software se generan mapas de error para los distintos escenarios. Con esto se encuentra que los errores en el reflector secundario experimentan un cambio considerablemente mayor en su posición en la apertura, al cambiar la posición de medición en el plano focal, en comparación con los errores en el primario. La holografía del CCAT-p ha sido simulada satisfactoriamente y se ha identificado un comportamiento diferente entre los errores de las superficies de los reflectores.
QUIMAL 180004

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Liou, Anthony Kian-Fong. "Characterisation of the eukaryotic Chaperonin CCT". Thesis, Institute of Cancer Research (University Of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362743.

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King, Mikayala D. A. "Studies on the eukaryotic chaperonin CCT". Thesis, University of Kent, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404534.

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Książki na temat "CCHT"

Canada Mortgage and Housing Corporation., red. Development of micro-CHP technology assessment capability at CCHT. [Ottawa]: CMHC, 2005.

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C, Swinton M., Szadkowski F, Gusdorf J, Ruest K i Institute for Research in Construction (Canada), red. The effects of thermostat setting on seasonal energy consumption at the CCHT research facility. Ottawa: Institute for Research in Construction, National Research Council Canada, 2005.

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Institute of Leisure & Amenity Management. Information Centre. CCT. Reading: Institute of Leisure and Amenity Management, 1991.

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Špiesz, Anton. CCT & equalities. Sheffield: Services to Community Action and Trade Unions, 1990.

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Transition, Centre for Co-operation with Economies in. CCET activities report 1993. Paris: Organisation for Economic Co-operation and Development, 1994.

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Board, Local Authorities' Conditions of Service Advisory. CCT information service. London: LACSAB, 1994.

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Board, Local Authorities' Conditions of Service Advisory. CCT information service. London: LACSAB, 1991.

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Local Government Management Board. Employment Surveys and Research Unit. CCT information service. London: LGMB, 1995.

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Local Government Management Board. Employment Surveys and Research Unit. CCT information service. London: LGMB, 1992.

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Parkes, Carola M. H. CCH business profiles. Bicester: CCH, 1994.

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Części książek na temat "CCHT"

Li, Ying, i Xiangqiang Kong. "Introduction to CCHP Systems". W Handbook of Energy Systems in Green Buildings, 1–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49088-4_36-1.

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Li, Ying, i Xiangqiang Kong. "Introduction to CCHP Systems". W Handbook of Energy Systems in Green Buildings, 551–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-49120-1_36.

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Book, Howard E. "Identifying the CCRT focus." W How to practice brief psychodynamic psychotherapy: The core conflictual relationship theme method., 21–32. Washington: American Psychological Association, 1998. http://dx.doi.org/10.1037/10251-002.

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Bratton, Sue C., i Alyssa Swan. "Research Evidence for CCPT". W Play Therapy, 411–42. Wyd. 4. New York: Routledge, 2023. http://dx.doi.org/10.4324/9781003255796-19.

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Slattery, Susan M., Stephanie M. Marshall, Ilya Khaytin i Debra E. Weese-Mayer. "Congenital Central Hypoventilation Syndrome (CCHS)". W Complex Sleep Breathing Disorders, 185–95. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57942-5_17.

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Duran, Dolores, i Salvador Galindo. "Thermoeconomic Study of CCGT Plants". W Towards a Cleaner Planet, 87–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71345-6_7.

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Cochran, J. L., H. S. Gantt, N. H. Cochran i W. J. Nordling. "Research and Literature Supporting CCPT". W Child-Centered Play Therapy, 33–59. Wyd. 2. New York: Routledge, 2022. http://dx.doi.org/10.4324/9781003260431-4.

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Nahler, Gerhard. "controlled clinical trial (CCT)". W Dictionary of Pharmaceutical Medicine, 39. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_292.

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Sawyerr, Alice Akoshia Ayikaaley, i Christopher Adam Bagley. "Child-Centred Humanism (CCH)". W Equality and Ethnic Identities, 49–59. Rotterdam: SensePublishers, 2017. http://dx.doi.org/10.1007/978-94-6351-080-6_4.

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Vermorken, Jan B. "Treatment Intensification in Locoregionally Advanced Head and Neck Squamous Cell Carcinoma: What Are the Options and for Whom?" W Critical Issues in Head and Neck Oncology, 129–64. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23175-9_10.

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AbstractCurrent treatment guidelines for patients with locoregionally advanced head and neck squamous cell carcinoma (LA-HNSCC) recommend multimodal treatment, including concurrent chemoradiotherapy (CCRT) or surgery followed by radiotherapy (RT), with/without chemotherapy (CT). Induction chemotherapy followed by (chemo)-RT has also level I evidence for larynx preservation procedures in patients with advanced laryngeal or hypopharyngeal cancer. The CT part of the CCRT consists of platinum-based chemotherapy, most often single agent cisplatin. Although for a long time high-dose cisplatin (100 mg/m2) three-times every three weeks during RT has been the standard of care, recent prospective randomized studies have indicated that weekly low-dose cisplatin (40 mg/m2) is a good alternative with less toxicity. For patients not eligible or not tolerating cisplatin there are other alternatives (such as carboplatin with or without 5-fluorouracil, taxanes or cetuximab). However, none of these have shown superior results over the use of cisplatin in randomized trials. Late toxicity is a major downside of CCRT, and this is most worrying for those with the highest chance of cure, i.e. low-risk human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinoma (OPSCC). De-escalation approaches have priority in these patients, but this needs to be done with the utmost caution. In the remaining patient populations (high-risk HPV-positive OPSCC, HPV-negative OPSCC and non-OPSCC patients) there is room for improvement in both locoregional control and in distant control. Recent strategies of potential interest above and beyond CCRT are adding (1) more cytotoxic chemotherapy, (2) targeted therapy, (3) hypoxic sensitizers, (4) immunotherapy and (5) hyperthermia. Many of those options are being investigated in prospective randomized trials and will hopefully lead to further improvement in outcome for these less favorable HNSCC patient categories.

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Streszczenia konferencji na temat "CCHT"

Yang, L., M. A. Douglas, J. Gusdorf, F. Szadkowski, E. Limouse, M. Manning i M. Swinton. "Residential Total Energy System Testing at the Canadian Centre for Housing Technology". W ASME 2007 Power Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/power2007-22137.

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This paper outlines a demonstration project planned and implemented at the Canadian Centre for Housing Technology (CCHT) in 2006. The CCHT, located on the campus of the National Research Council (NRC) in Ottawa, Ontario, Canada maintains two identical, detached, single-family houses that have the capacity to assess energy and building technologies in side by side comparisons with daily simulated occupancy effects. The paper describes the residential integrated total energy system being installed in one of the homes at the CCHT for this demonstration, consisting of two one-ton ground source heat pumps, an air handler with supplemental/back-up hydronic heating capability, a natural gas fired storage type water tank, an indirect domestic hot water storage tank and a multistage thermostat capable of controlling the system. There is also a description of the bore-field, consisting of three vertical wells arranged to suit a typical suburban landscape. Two of the wells serve the heat pumps; the third well is arranged between the other two to sink the waste heat from a cogeneration unit. The 6 kWe cogeneration unit to be installed in May 2007 is also described. The heat pump system was deliberately sized to satisfy the cooling load in Canada’s heat dominated climate, leaving room in the operation of the system to accept waste heat from the cogeneration unit, either directly or indirectly through recycling the heat through the ground to the heat pumps. This paper presents and discusses preliminary testing results during the fall of 2006 and modeling work of the ground heat exchanger component of the system and therefore sets the stage for performance modeling work that is currently underway at Natural Resources Canada (NRCan).

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Possidente, Raffaello, Carlo Roselli, Maurizio Sasso i Sergio Sibilio. "Gas Driven Micro-Cogenerator Incorporating Heat Pump: Exergetic, Economic and Environmental Analysis". W ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95509.

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A natural gas-fired micro-cogenerator (MCHP) based on a reciprocating internal combustion engine that drives an electric heat pump (EHP), MCHP/EHP, has been analyzed. It allows a high degree of flexibility in terms of operating conditions, due to the possibility to use the two devices separately supplying electric and thermal (heating and cooling) energy (CCHT, Combined Cooling Heating and Power). The MCHP/EHP is a gas cooling technology that can contribute to optimize the natural gas and electricity consumptions in those countries where the HVAC systems are widespread. In particular, our interest was focused on micro-cogenerators (electric power ≤ 15 kW) at the moment available on the market, based on reciprocating internal combustion engine, that could have a great diffusion in the near future for domestic and light commercial applications. Starting by the results of an intense experimental activity an exergetic, economic and environmental analysis has been carried out to compare the proposed MCHP/EHP system to the conventional one based on separate “production”.

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Padin, S., M. Hollister, S. Radford, J. Sayers, D. Woody, J. Zmuidzinas, G. Cortes-Medellin, T. Sebring i G. Stacey. "CCAT optics". W SPIE Astronomical Telescopes + Instrumentation, redaktorzy Larry M. Stepp, Roberto Gilmozzi i Helen J. Hall. SPIE, 2010. http://dx.doi.org/10.1117/12.856489.

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"CCET 2019 Committees". W 2019 IEEE 2nd International Conference on Computer and Communication Engineering Technology (CCET). IEEE, 2019. http://dx.doi.org/10.1109/ccet48361.2019.8989011.

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"CCET 2019 TOC". W 2019 IEEE 2nd International Conference on Computer and Communication Engineering Technology (CCET). IEEE, 2019. http://dx.doi.org/10.1109/ccet48361.2019.8989285.

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"CCET 2019 Preface". W 2019 IEEE 2nd International Conference on Computer and Communication Engineering Technology (CCET). IEEE, 2019. http://dx.doi.org/10.1109/ccet48361.2019.8989364.

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Hedding, Roger A. "CCVT transient fundamentals". W 2012 65th Annual Conference for Protective Relay Engineers. IEEE, 2012. http://dx.doi.org/10.1109/cpre.2012.6201217.

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Liang, H. X., i Q. W. Wang. "Evaluation of Energy Efficiency for a CCHP System With Available Microturbine". W ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27883.

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This paper deals with the problem of energy utilization efficiency evaluation of a microturbine system for Combined Cooling, Heating and Power production (CCHP). The CCHP system integrates power generation, cooling and heating, which is a type of total energy system on the basis of energy cascade utilization principle, and has a large potential of energy saving and economical efficiency. A typical CCHP system has several options to fulfill energy requirements of its application, the electrical energy can be produced by a gas turbine, the heat can be generated by the waste heat of a gas turbine, and the cooling load can be satisfied by an absorption chiller driven by the waste heat of a gas turbine. The energy problem of the CCHP system is so large and complex that the existing engineering cannot provide satisfactory solutions. The decisive values for energetic efficiency evaluation of such systems are the primary energy generation cost. In this paper, in order to reveal internal essence of CCHP, we have analyzed typical CCHP systems and compared them with individual systems. The optimal operation of this system is dependent upon load conditions to be satisfied. The results indicate that CCHP brings 38.7 percent decrease in energy consumption comparing with the individual systems. A CCHP system saves fuel resources and has the assurance of economic benefits. Moreover, two basic CCHP models are presented for determining the optimum energy combination for the CCHP system with 100kW microturbine, and the more practical performances of various units are introduced, then Primary Energy Ratio (PER) and exergy efficiency (α) of various types and sizes systems are analyzed. Through exergy comparison performed for two kinds of CCHP systems, we have identified the essential principle for high performance of the CCHP system, and consequently pointed out the promising features for further development.

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Cortés-Medellín, Germán, i Terry Herter. "Optical design of CCAT". W SPIE Astronomical Telescopes + Instrumentation, redaktor Larry M. Stepp. SPIE, 2006. http://dx.doi.org/10.1117/12.670300.

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"CCET 2019 Copyright Page". W 2019 IEEE 2nd International Conference on Computer and Communication Engineering Technology (CCET). IEEE, 2019. http://dx.doi.org/10.1109/ccet48361.2019.8988933.

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Raporty organizacyjne na temat "CCHT"

Mangum, B. W. CCT-K3 :. Gaithersburg, MD: National Bureau of Standards, 2002. http://dx.doi.org/10.6028/nist.tn.1450.

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Zipperian, T. E., i E. R. Voelker. CCST (Center for Compound Semiconductor Technology) research briefs. Office of Scientific and Technical Information (OSTI), grudzień 1989. http://dx.doi.org/10.2172/7272869.

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Lyo, S., i E. Jones. CCST (Center for Compound Semiconductor Technology) Research Briefs. Office of Scientific and Technical Information (OSTI), czerwiec 1989. http://dx.doi.org/10.2172/7258081.

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Burton, Donald E., Nathaniel R. Morgan i Mark A. Kenamond. Verification studies of CCH and xALE. Office of Scientific and Technical Information (OSTI), czerwiec 2013. http://dx.doi.org/10.2172/1083103.

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Darrow, D. S., M. Ono, P. A. Pribyl i R. J. Taylor. Hot-cathode preionization studies in CCT. Office of Scientific and Technical Information (OSTI), lipiec 1991. http://dx.doi.org/10.2172/5519253.

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Shen, Bo, Omar Abdelaziz, Van Baxter i C. Rice. High Performance Cold Climate Heat Pump (CCHP) – Final Report. Office of Scientific and Technical Information (OSTI), grudzień 2015. http://dx.doi.org/10.2172/1238262.

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Messmer, Craig S. Residential Cold Climate Heat Pump (CCHP) w/Variable Speed Technology. Office of Scientific and Technical Information (OSTI), wrzesień 2016. http://dx.doi.org/10.2172/1327245.

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Shen, Bo, i Jeffrey D. Munk. Cost-Optimized CCHP Model Developed Using HPDM Meeting Performance Targets. Office of Scientific and Technical Information (OSTI), sierpień 2019. http://dx.doi.org/10.2172/1557522.

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Li, Zhu. A rare benign lesion in the lung: Clear Cell “Sugar” tumor (CCST). Science Repository, maj 2018. http://dx.doi.org/10.31487/j.cor.2018.10.014.

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Attanasio, Orazio, Lina Cardona-Sosa, Carlos Medina, Costas Meghir i Christian Posso. Long Term Effects of Cash Transfer Programs in Colombia. Banco de la República, sierpień 2021. http://dx.doi.org/10.32468/be.1170.

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Conditional Cash transfer (CCT) programs have been shown to have positive effects on a variety of outcomes including education, consumption and health visits, amongst others. We estimate the long-run impacts of the urban version of Familias en Acción, the Colombian CCT program on crime, teenage pregnancy, high school dropout and college enrollment using a Regression Discontinuity design on administrative data. ITT estimates show a reduction on arrest rates of 2.7pp for men and a reduction on teenage pregnancy of 2.3pp for women. High school dropout rates were reduced by 5.8pp and college enrollment was increased by 1.7pp for men.

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