169 research outputs found
Contribution à l'étude théorique du spectre d'absorption optique du rubis
No full textA study has been undertaken of the optical spectrum of ruby taking the free ion states of Cr3+ as basic functions. Interactions between configurations of the type fn2 e3—n are taken into account by perturbation theory, and it is shown that, by adjusting the parameters, it is possible to interpret a large number of experimental results, in particular those relating to the lines R'1 , R'2, R'3 and B1, B2, B3. Two independent parameters are necessary to allow for the effects of the trigonal component of the crystal field.Nous avons repris l'étude du spectre d'absorption optique du rubis, en utilisant, comme fonctions de base, les fonctions d'onde de l'ion libre Cr 3+. Bien que toutes les interactions aient été traitées par la théorie des perturbations, nos calculs tiennent compte du mélange des différentes configurations fn 2 e3—n, et nous avons montré qu'il est possible par un ajustement convenable des paramètres employés, d'interpréter un grand nombre de données expérimentales concernant en particulier les raies R' 1, R'2, R'3 et B1, B2, B 3. Deux paramètres indépendants ont été nécessaires pour rendre compte des effets de la composante ternaire du champ cristallin
Long-term Effects of Octreotide on Liver Volume in Patients With Polycystic Kidney and Liver Disease
Get PDFBackground & aims: Short-term studies have shown that somatostatin analogues are effective in patients with polycystic kidney and liver disease. We evaluated the long-term effects of long-acting release octreotide (octreotide LAR), a somatostatin inhibitor, vs placebo in these patients.Methods: We performed a controlled study of adults with polycystic kidney and liver disease (estimated glomerular filtration rate, 40 mL/min/1.73m(2) or more) at a single center in Italy. We analyzed data from 27 patients randomly assigned to groups given octreotide LAR (40 mg, n = 14) or placebo (n = 13) each month for 3 years. The primary outcome was absolute and percentage change in total liver volume (TLV), which was measured by magnetic resonance imaging at baseline, after 3 years of treatment, and then 2 years after treatment ended.Results: Baseline characteristics were similar between groups. After 3 years, TLV decreased by 130.2 ± 133.2 mL in patients given octreotide LAR (7.8% ± 7.4%) (P = .003) but increased by 144.3 ± 316.8 mL (6.1% ± 14.1%) in patients given placebo. Change vs baseline differed significantly between groups (P = .004). Two years after treatment ended, TLV had decreased 14.4 ± 138.4 mL (0.8% ± 9.7%) from baseline in patients given octreotide LAR but increased by 224.4 ± 331.7 mL (11.0% ± 14.4%) in patients given placebo. Changes vs baseline still differed significantly between groups (P = .046). Decreases in TLV were similar in each sex; the change in TLV was greatest among subjects with larger baseline TLV. No patient withdrew because of side effects.Conclusions: In a placebo-controlled study of patients with polycystic kidney and liver disease, 3 years of treatment with octreotide LAR significantly reduced liver volume; reductions were maintained for 2 years after treatment ended. Octreotide LAR was well-tolerated. ClinicalTrials.gov number: NCT02119052
Critical Research Ethics as Decolonial Praxis
Get PDFIn the comment “Critical Research Ethics as Decolonial Praxis” Rosa Cordillera A. Castillo emphasises the importance of critical research ethics in decolonial praxis within academia, highlighting the harmful effects of irresponsible and extractive scholarship that perpetuates epistemic violence and injustice by disregarding non-Western epistemologies, knowledge-makers, agency, and history. The author argues that confronting the embeddedness of knowledge production in imperial, colonial, and patriarchal ideologies, practices, and histories is crucial for engaging in a rehumanising and redistributive academic praxis. June Rubis continues the discussion, pointing out the limitations of superficial attempts to decolonise academic institutions, which often exclude Indigenous voices and fail to confront ongoing colonial violence. She suggests that a more meaningful decolonial project requires remaking relationships towards liberatory justice, including ethical collaboration and accountability with the communities researchers work with. Antony George Pattathu concludes that decolonial praxis and ethics must address colonial continuities and complicities and work towards preventing their perpetuation in research. He focusses on the roles of rehumanising and of Whiteness in decolonial praxis, critical research ethics, and the importance of the emotional dimension involved in decolonial debates
Critical Research Ethics as Decolonial Praxis: A comment and responses
No full textIn the comment “Critical Research Ethics as Decolonial Praxis” Rosa Cordillera A. Castillo emphasises the importance of critical research ethics in decolonial praxis within academia, highlighting the harmful effects of irresponsible and extractive scholarship that perpetuates epistemic violence and injustice by disregarding non-Western epistemologies, knowledge-makers, agency, and history. The author argues that confronting the embeddedness of knowledge production in imperial, colonial, and patriarchal ideologies, practices, and histories is crucial for engaging in a rehumanising and redistributive academic praxis. June Rubis continues the discussion, pointing out the limitations of superficial attempts to decolonise academic institutions, which often exclude Indigenous voices and fail to confront ongoing colonial violence. She suggests that a more meaningful decolonial project requires remaking relationships towards liberatory justice, including ethical collaboration and accountability with the communities researchers work with. Antony George Pattathu concludes that decolonial praxis and ethics must address colonial continuities and complicities and work towards preventing their perpetuation in research. He focusses on the roles of rehumanising and of Whiteness in decolonial praxis, critical research ethics, and the importance of the emotional dimension involved in decolonial debates
Cactus Hill, Rubis-Pearsall and Blueberry Hill: one is an accident; two is a coincidence; three is a pattern – predicting "old dirt" in the Nottoway river valley of Southeastern Virginia, U. S. A.
No full textThis thesis covers more than thirty years of the author's research into the Paleoamerican period of the Middle Atlantic Region of North America, including the last 19+ years of focused work on the Cactus Hill site (44SX202) and replication of the Paleoamerican occupation discovered there. Using a landform and geology based predictive model derived from the Paleoamerican occupation at Cactus Hill, the author directed preliminary archaeological testing in three other areas of the same Nottoway River Valley, where Cactus Hill is located. These areas were the Barr site, located 11 miles (18 km.) downriver from Cactus Hill; the Chub Sandhill Natural Resource Conservation Area, located 19 miles (30 km.) downriver from Cactus Hill; and the Blueberry Hill site (44SX327), located approximately 1,000 feet (300 meters) east of Cactus Hill. The latter two produced OSL dated, pre-Younger-Dryas landforms, as predicted. The Rubis-Pearsall site (44SX360), located in the Chub Sandhill preserve also produced a buried Paleoamerican, Clovis age cultural level confirming the model. In addition to the OSL dates, Blueberry Hill also produced a distinct and apparently discrete activity surface with a possible pre-Clovis age Cactus Hill point at the same depth as the Paleoamerican levels at Cactus Hill and Rubis-Pearsall
Cactus Hill, Rubis-Pearsall and Blueberry Hill: one is an accident; two is a coincidence; three is a pattern – predicting "old dirt" in the Nottoway river valley of Southeastern Virginia, U. S. A.
No full textThis thesis covers more than thirty years of the author's research into the Paleoamerican period of the Middle Atlantic Region of North America, including the last 19+ years of focused work on the Cactus Hill site (44SX202) and replication of the Paleoamerican occupation discovered there. Using a landform and geology based predictive model derived from the Paleoamerican occupation at Cactus Hill, the author directed preliminary archaeological testing in three other areas of the same Nottoway River Valley, where Cactus Hill is located. These areas were the Barr site, located 11 miles (18 km.) downriver from Cactus Hill; the Chub Sandhill Natural Resource Conservation Area, located 19 miles (30 km.) downriver from Cactus Hill; and the Blueberry Hill site (44SX327), located approximately 1,000 feet (300 meters) east of Cactus Hill. The latter two produced OSL dated, pre-Younger-Dryas landforms, as predicted. The Rubis-Pearsall site (44SX360), located in the Chub Sandhill preserve also produced a buried Paleoamerican, Clovis age cultural level confirming the model. In addition to the OSL dates, Blueberry Hill also produced a distinct and apparently discrete activity surface with a possible pre-Clovis age Cactus Hill point at the same depth as the Paleoamerican levels at Cactus Hill and Rubis-Pearsall
Sûreté réelle pour autrui. Rejet de la demande de mainlevée de l'hypothèque pour défaut de déclaration de la créance garantie dans la liquidation judiciaire du débiteur
No full textInternational audience(Civ. 3e, 12 avr. 2018, n° 17-17.542, arrêt n° 359 FS-P+B+I, G. c/ Sté Rubis Avignon-Rubis matériaux, D. 2018. 1540, note A. Gouëzel ; RDI 2018. 385, obs. H. Heugas-Darraspen ; AJ Contrat 2018. 241, obs. D. Houtcieff ; RTD civ. 2018. 461, obs. P. Crocq ; Gaz. Pal. 12 juin 2018, p. 71, note M. Bourassin ; JCP 2018. 670, note A. Aynès ; JCP E 2018. 1302, note D. Legeais ; Rev. proc. coll. 2018, comm. 114, note C. Gijsbers ; Banque et Droit mai-juin 2018. 61, obs. F. Jacob
Palatability as indicated by preference by model herbivore
Get PDFV diplomskem delu smo raziskovali morfološko-funkcionalno potezo (MFP), in sicer okusnost listov na primeru modelnega herbivora. Naša raziskava je bila osnovana na 600 rastlinskih vzorcih, ki so zajemali kulturne in travniške rastline. Kot modelni herbivor smo izbrali rdečega lazarja (Arion rufus L.). Prvotno smo primerjali testne vzorce vseh rastlinskih vrst z njihovimi kontrolami. Ugotovili smo, da so herbivori najmanj objedali liste rastlinskih vrst Rubis idaeus L., Melissa officinalis L. in Cucumis sativus L., najpogosteje pa so se prehranjevali z listi vrst Taraxacum officinale L. in Erigeron annuus L.. V skladu z našimi predvidevanji so herbivori najmanj objedli liste rastlin s prisotnostjo sekundarnih sprememb celične stene, epidermalnimi tvorbami ter nizko hranilno vrednostjo. V nasprotju z našimi pričakovanji pa prisotnost sekundarnih metabolitov v listih ni imela vpliva na sam izbor herbivora. V naši raziskavi smo tudi ugotovili, da se modelni herbivor raje prehranjuje z izbranimi travniškimi rastlinskimi vrstami kot pa s kulturnimi.In graduation thesis, we have researched leaf palatability as indicated by preference by model herbivore, which is one of the morphological – functional traits (MFT). Our research was based on 600 plant samples, which included cultivated and grassland plants. We incorporated Arion rufus L. as a model herbivore. First, we compared test samples with their controls for each of the plant species. We came to the conclusion that herbivores were avoiding plants Rubis Idaeus L., Melissa Officinalis L. in Cucumis sativus L. and were prefering Taraxacum officinale L. in Erigeron Annuus L.. In accordance with our expectations, leaf preference was most influenced by secondary cell wall changes, epidermal outgrowths and nutritional value. Contrary to our predictions, secondary metabolites did not have a dominant influence on leaf palatability. We concluded that herbivores prefer grassland plants over cultivated plants
System Load Characterization Using Low-Level Performance Measurements
No full textThe performance of a software system directly influences customer satisfaction. Self-adaptiveness can contribute to this customer satisfaction by (1) taking appropriate measures when the performance becomes critical, e.g., the system load is too high, or (2) scheduling intensive tasks when the load is low. We investigate how self-adaptive systems can use low-level system measurements to characterize the load on a system. Our approach uses a combination of statistics and association rule learning to perform the characterization. We evaluate our approach using two case studies: a large-scale industrial system and a widely used synthetic benchmark (RUBiS). From our case studies follows that our approach is capable of closely characterizing the load on a system and that it is successful in detecting performance anomalies as well.Software Computer TechnologyElectrical Engineering, Mathematics and Computer Scienc
Effects of plant biostimulants on fruit set, growth, yield and fruit quality attributes of ‘Orange rubis®’ apricot (Prunus armeniaca L.) cultivar in two consecutive years
No full textApricot (Prunus armeniaca L.) is a species particularly prone to erratic production and this behavior has been
related to the narrow adaptability of this species. Plant biostimulants are known as organic substances that could
enhance growth, development, tolerance to abiotic stresses and crop quality. In this study the effect of three
commercial biostimulant products (Hendophyt®, Ergostim®, and Radicon®), compared with control, on fruit set,
yield and physical-chemical traits of Orange rubis® apricot cultivar were studied. The investigation was conducted
during 2015 and 2016 seasons in a commercial orchard in Cerignola (Foggia district, Apulia region,
Southern Italy – 41° 15′ 49′′ N; 15° 53′ 59′′ E; a.s.l 126 m). Foliar treatments with biostimulants were applied at
three times (at red ball, fruit setting and fruit development stages) during each growth season. Other than
vegeto-productive behavior, as well as blossoming, fruit set and yield, physical, chemical and phytochemicals
parameters (total polyphenols content and antioxidant activity) were evaluated. Fruit set percentage, productivity
and qualitative attributes were affected mainly by seasonal growths. Significantly interaction between
years and biostimulant applications were noted. All biostimulant treatments gave higher values of antioxidant
activity respect to the control
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