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https://www.readbyqxmd.com/read/25380343/pressure-dependence-of-butyl-nitrate-formation-in-the-reaction-of-butylperoxy-radicals-with-nitrogen-oxide
#1
N I Butkovskaya, A Kukui, G Le Bras, M-T Rayez, J-C Rayez
The yield of 1- and 2-butyl nitrates in the gas-phase reactions of NO with n-C4H9O2 and sec-C4H9O2, obtained from the reaction of F atoms with n-butane in the presence of O2, was determined over the pressure range of 100-600 Torr at 298 K using a high-pressure turbulent flow reactor coupled with a chemical ionization quadrupole mass spectrometer. The yield of butyl nitrates was found to increase linearly with pressure from about 3% at 100 Torr to about 8% at 600 Torr. The results obtained are compared with the available data concerning nitrate formation from NO reaction with other small alkylperoxy radicals...
May 14, 2015: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/23909714/plant-extracts-for-the-topical-management-of-psoriasis-a-systematic-review-and-meta-analysis
#2
REVIEW
S Deng, B H May, A L Zhang, C Lu, C C L Xue
Patients with psoriasis frequently use preparations of plant extracts. Physicians need to be aware of the current evidence concerning these products. This review evaluates the efficacy and safety of preparations of plant extracts used topically for psoriasis. Searches were conducted in PubMed, Embase, the Cochrane library, two Chinese databases and article reference lists. Randomized controlled trials investigating extracts of single plants were included. Preparations of multiple plants and combinations of plant extracts plus conventional therapies were excluded...
October 2013: British Journal of Dermatology
https://www.readbyqxmd.com/read/22329640/pressure-and-temperature-dependence-of-methyl-nitrate-formation-in-the-ch3o2-no-reaction
#3
Nadezhda Butkovskaya, Alexandre Kukui, Georges Le Bras
The branching ratio β = k(1b)/k(1a) for the formation of methyl nitrate, CH(3)ONO(2), in the gas-phase CH(3)O(2) + NO reaction, CH(3)O(2) + NO → CH(3)O + NO(2) (1a), CH(3)O(2) + NO → CH(3)ONO(2) (1b), has been determined over the pressure and temperature ranges 50-500 Torr and 223-300 K, respectively, using a turbulent flow reactor coupled with a chemical ionization mass spectrometer. At 298 K, the CH(3)ONO(2) yield has been found to increase linearly with pressure from 0.33 ± 0.16% at 50 Torr to 0.80 ± 0...
June 21, 2012: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/21850285/a-report-from-the-164th-american-psychiatric-association-may-14-18-2011-honolulu-hawai-i-u-s-a
#4
Xavier Rabasseda
Although tradition mandates that men should be dressed up in colorless attires, why do men visiting Hawai'i run to the first Aloha shop right after landing to get a multicolored flowery shirt, with a lei flower or kukui tree nut necklace to go with it? The answer to this question could be very complex, but psychiatrists attending this year's American Psychiatric Association meeting in the Honolulu Convention Center acted in a not dissimilar way by running to the new research poster and educational oral sessions of the meeting to learn new colors to paint the life of their patients with...
August 2011: Drugs of Today
https://www.readbyqxmd.com/read/20025255/pressure-and-temperature-dependence-of-ethyl-nitrate-formation-in-the-c-2-h-5-o-2-no-reaction
#5
Nadezhda Butkovskaya, Alexandre Kukui, Georges Le Bras
The branching ratio beta = k(1b)/k(1a) for the formation of ethyl nitrate, C(2)H(5)ONO(2), in the gas-phase C(2)H(5)O(2) + NO reaction, C(2)H(5)O(2) + NO --> C(2)H(5)O + NO(2) (1a), C(2)H(5)O(2) + NO --> C(2)H(5)ONO(2) (1b), was determined over the pressure and temperature ranges 100-600 Torr and 223-298 K, respectively, using a turbulent flow reactor coupled with a chemical ionization mass spectrometer. At 298 K the C(2)H(5)ONO(2) yield was found to increase linearly with pressure from about 0.7% at 100 Torr to about 3% at 600 Torr...
January 21, 2010: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/19780600/water-vapor-effect-on-the-hno3-yield-in-the-ho2-no-reaction-experimental-and-theoretical-evidence
#6
Nadezhda Butkovskaya, Marie-Thérèse Rayez, Jean-Claude Rayez, Alexandre Kukui, Georges Le Bras
The influence of water vapor on the production of nitric acid in the gas-phase HO(2) + NO reaction was determined at 298 K and 200 Torr using a high-pressure turbulent flow reactor coupled with a chemical ionization mass spectrometer. The yield of HNO(3) was found to increase linearly with the increase of water concentration reaching an enhancement factor of about 8 at [H(2)O] = 4 x 10(17) molecules cm(-3) ( approximately 50% relative humidity). A rate constant value k(1bw) = 6 x 10(-13) cm(3) molecule(-1) s(-1) was derived for the reaction involving the HO(2)xH(2)O complex: HO(2)xH(2)O + NO --> HNO(3) (1bw), assuming that the water enhancement is due to this reaction...
October 22, 2009: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/17718462/hno3-forming-channel-of-the-ho2-no-reaction-as-a-function-of-pressure-and-temperature-in-the-ranges-of-72-600-torr-and-223-323-k
#7
Nadezhda Butkovskaya, Alexandre Kukui, Georges Le Bras
A high-pressure turbulent flow reactor coupled with a chemical ionization mass-spectrometer was used to determine the branching ratio of the HO(2) + NO reaction: HO(2) + NO --> OH + NO(2) (1a), HO(2) + NO --> HNO(3) (1b). The branching ratio, beta = k(1b)/k(1a), was derived from the measurements of "chemically amplified" concentrations of the NO(2) and HNO(3) products in the presence of O(2) and CO. The pressure and temperature dependence of beta was determined in the pressure range of 72-600 Torr of N(2) carrier gas between 323 and 223 K...
September 20, 2007: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/17165875/mechanism-of-the-oh-initiated-oxidation-of-glycolaldehyde-over-the-temperature-range-233-296-k
#8
Nadezhda I Butkovskaya, Nicolas Pouvesle, Alexandre Kukui, Georges Le Bras
The mechanism of the gas-phase OH-initiated oxidation of glycolaldehyde (HOCH(2)CHO) was studied in the 233-296 K temperature range using a turbulent flow reactor coupled with a chemical ionization mass spectrometer. In the presence of O2, formaldehyde, CO2, formic acid, and glyoxal were observed at room temperature with the yields of 80, 34, 18, and 14%, respectively. Decrease of temperature to 233 K led to significant changes in the yields of the stable products: those of formaldehyde and glyoxal decreased to 50 and 4%, respectively, whereas that of formic acid increased to 52%...
December 21, 2006: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/16833996/formation-of-nitric-acid-in-the-gas-phase-ho2-no-reaction-effects-of-temperature-and-water-vapor
#9
N I Butkovskaya, A Kukui, N Pouvesle, G Le Bras
A high-pressure turbulent flow reactor coupled with a chemical ionization mass spectrometer was used to investigate the minor channel (1b) producing nitric acid, HNO3, in the HO2 + NO reaction for which only one channel (1a) is known so far: HO2 + NO --> OH + NO2 (1a), HO2 + NO --> HNO3 (1b). The reaction has been investigated in the temperature range 223-298 K at a pressure of 200 Torr of N2 carrier gas. The influence of water vapor has been studied at 298 K. The branching ratio, k1b/k1a, was found to increase from (0...
July 28, 2005: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/16722699/mechanism-of-the-oh-initiated-oxidation-of-hydroxyacetone-over-the-temperature-range-236-298-k
#10
Nadezhda I Butkovskaya, Nicolas Pouvesle, Alexander Kukui, Yujing Mu, Georges Le Bras
The mechanism of the gas-phase reaction of OH radicals with hydroxyacetone (CH3C(O)CH2OH) was studied at 200 Torr over the temperature range 236-298 K in a turbulent flow reactor coupled to a chemical ionization mass-spectrometer. The product yields and kinetics were measured in the presence of O2 to simulate the atmospheric conditions. The major stable product at all temperatures is methylglyoxal. However, its yield decreases from 82% at 298 K to 49% at 236 K. Conversely, the yields of formic and acetic acids increase from about 8% to about 20%...
June 1, 2006: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/16217900/-the-evolution-of-pharmaceutical-schools-in-toyama-prefecture-since-the-meiji-era
#11
Kiyonobu Ohashi
In this paper, the author attempts to generalize the evolution of pharmaceutical schools in Toyama since the Meiji Era. The copy of a petition drafted by pill peddlers of Toyama in 1873 suggests that there were expectations that a "Semi (chemicals)" school was going to be established; however, this was not realized. In 1877, the Ishikawa Prefectural Government established a small-scale pharmaceutical school associated with the public hospitals of Kanazawa, Toyama and Kukui. In 1883, Toyama Prefecture became isolated from Ishikawa Prefecture, and the above-mentioned pharmaceutical school continued operations until 1887, when the government closed it due to financial problems...
2005: Yakushigaku Zasshi. the Journal of Japanese History of Pharmacy
https://www.readbyqxmd.com/read/16101874/effectiveness-of-kukui-nut-oil-as-a-topical-treatment-for-psoriasis
#12
RANDOMIZED CONTROLLED TRIAL
Amy C Brown, Jamie Koett, Douglas W Johnson, Nicole M Semaskvich, Peter Holck, David Lally, Luis Cruz, Ryan Young, Brice Higa, Serena Lo
BACKGROUND: No cure for psoriasis exists for the 1-3% of the American population who suffer from it; however, anecdotal reports from patients with psoriasis visiting Hawaii who purchased kukui nut oil, claim it helped reduce the severity of their lesions. OBJECTIVE: This pilot study was a double-blind, placebo-controlled clinical trial to determine the effectiveness of kukui nut oil as a topical treatment for psoriasis. METHODS: Thirty adult subjects (18-78 year) were recruited from the community for a 12-week randomized, double-blind, placebo-controlled pilot study...
August 2005: International Journal of Dermatology
https://www.readbyqxmd.com/read/15992221/indigenous-hawaiian-nonmedical-and-medical-use-of-the-kukui-tree
#13
REVIEW
Ryan A K Young, Luis G Cruz, Amy C Brown
No abstract text is available yet for this article.
June 2005: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/11961899/-carotenoid-contents-of-herbal-teas
#14
C Kukui, J Deli, G Tóth
Carotenoid composition of 14 herbal tea consumed by Herbaria was investigated by HPLC method. The main components were lutein (36-49%) cis-luteins (2-20%) and beta-carotene (3-25%). alpha- and beta-cryptoxanthin, alpha-carotene and some 5,6-epoxy-carotenoids (neoxanthin, violaxanthin, antheraxanthin) were detected. The chlorophyll content was also measured.
October 2001: Acta Pharmaceutica Hungarica
https://www.readbyqxmd.com/read/8379066/-the-morphofunctional-characteristics-of-the-normal-duodenojejunal-flexure-and-in-pathology-of-the-extrahepatic-bile-ducts
#15
COMPARATIVE STUDY
B M Datsenko, Sh F Ibishov, I A Petlenko, Ia A Kukuĭ
Results of complex experimental and clinical (146 patients) investigations of the morphofunctional state of the duodeno-intestinal flexure (DIF) are presented. It was established that patients with the pathology of extrahepatic bile ducts had limited mobility of DIF which was responsible for higher intraduodenal pressure and appearance of duodeno-gastric reflux. Mobilization of DIF improves the evacuation of the intestinal contents from the duodenum in patients with the pathology of extrahepatic bile ducts and is thought to be a prophylactic measure against the development of chronic duodenal obstruction after cholecystectomy...
March 1993: Vestnik Khirurgii Imeni I. I. Grekova
https://www.readbyqxmd.com/read/7412088/-alpha-lipoprotein-cholesterol-and-its-variability-in-ischemic-heart-disease
#16
COMPARATIVE STUDY
N G Nikul'cheva, I V Krivoruchenko, A S Bermiakova, L M Kukuĭ, O P Arkhipov
The authors conducted a repeated examination of 150 patients suffering from ischemic heart disease with normolipidemia and types IIa, IIb and IV hyperlipoproteinemia. The content of alpha-cholesterol in these patients tended to fluctuate, just as the content of other blood lipid fractions. Its fluctuations were most marked in types 11b and IV hyperlipoproteinemia. Comparison of the alpha-cholesterol content in patients with ischemic heart disease with the results of population tests confirmed the information on its lower level in patients...
August 1980: Kardiologiia
https://www.readbyqxmd.com/read/7401603/-effectiveness-of-trimecaine-a-new-anti-arrhythmia-agent
#17
E I Gendenshteĭn, I E Ganelina, Ia V Kostin, L M Kukuĭ, A P Tsybusov
No abstract text is available yet for this article.
June 1980: Klinicheskaia Meditsina
https://www.readbyqxmd.com/read/6521230/-modification-of-a-model-of-ventricular-fibrillation-by-a-combination-of-ligation-of-the-interventricular-artery-and-ultraviolet-irradiation-of-autoblood
#18
E I Vol'pert, I E Ganelina, L M Kukuĭ, T S Ianushkene, I Iu Borisova
The combination of interventricular artery ligation and extracorporeal intensive ultraviolet irradiation of autoblood enabled the researchers to bring down the threshold and to increase the frequency of ventricular fibrillations. The above finding has served as a basis for creating a new experimental model of delayed ventricular fibrillation with a higher possibility of its development.
December 1984: Kardiologiia
https://www.readbyqxmd.com/read/6309486/-ultraviolet-irradiated-blood-photochemistry-and-immunological-action
#19
V A Krylenkov, L M Kukuĭ, A M Malygin, M A Osmanov, A G Shapkin
No abstract text is available yet for this article.
May 1983: Doklady Akademii Nauk SSSR
https://www.readbyqxmd.com/read/6182067/-therapy-of-severe-stenocardia-with-ultraviolet-blood-irradiation-uvb-and-various-action-mechanisms-of-this-therapy
#20
I E Ganelina, L M Kukui, J P Nikolaewa, T E Schumilowa, W E Cholmogorow, K W Timofeew, A L Schurigin
We observed 70 male patients with a seriously proceeding Chronic myocardial ischemia. They were hospitalised because of frequent, permanent and serious attacks of stenocardia at rest and in stress situations. More than 2/3 of these patients had suffered from a myocardial infarct. In the course of two weeks an intensive therapy with all modern preparations for vasodilatation was made. This therapy proved to be unsuccessful. Nearly all patients were administered more than 10 tables of nitroglycerin per day and, in addition, they were injected analgetics as a compensation of attack...
1982: Folia Haematologica: Internationales Magazin Für Klinische und Morphologische Blutforschung
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