scholarly journals Composition of Suspended Micro-particles in the Air of Khabarovsk

10.12737/314 ◽  
2013 ◽  
Vol 2 (2) ◽  
pp. 10-14 ◽  
Author(s):  
Голохваст ◽  
Kirill Golokhvast ◽  
Алейникова ◽  
E. Aleynikova
Keyword(s):  
Airborne Particles ◽  
Anthropogenic Load ◽  
Quantitative Composition ◽  
Scanning Electronic Microscopy ◽  
Electronic Microscopy ◽  
Research Results ◽  
Qualitative And Quantitative ◽  
Micro Particles ◽  
The City

The research results of nano- and micro-particles of atmospheric suspensions contained in the snow of Khabarovsk during the winter of 2011/2012 are presented in this paper. The use of laser granulometry and scanning electronic microscopy for researching of qualitative and quantitative composition of precipitation suspensions is shown. The distribution of airborne particles with different sizes is revealed in the city parts distinguished by anthropogenic load.

scholarly journals Hotels contingency assessment in Padang city against coastal hazard

2018 ◽  
Vol 229 ◽  
pp. 02015
Author(s):  
Giani Ananda ◽  
Taufika Ophiyandri ◽  
Abdul Hakam
Keyword(s):  
Early Warning ◽  
Early Warning System ◽  
Warning System ◽  
Coastal Hazard ◽  
Public Buildings ◽  
Research Results ◽  
Qualitative And Quantitative ◽  
Analytic Methods ◽  
Evacuation Route ◽  
The City

Padang city has a variety of regions including coastal. The city of Padang is very vulnerable to coastal disaster (Coastal Hazard). In response to these statements, it is necessary to optimize the Multi-Hazard Early Warning System (MHEWS) for contingencies against coastal hazard referring to the four major components of MHEWS according to UNISDR. Hotels are kind of many public buildings that may be used as shelters. The purpose of this study is to assess the hotel contingencies in Padang city against coastal hazard. To achieve the goal, some near the beach hotels have been selected as the object of research. The selected hotels are five of four-star hotels, one of one-star hotel, and three for two-star hotels. The research results are processed by qualitative and quantitative analytic methods. The assessment then concludes that contingency afford is effected by the level hotel star. The important things that need to be planned for the hotel contingency against the coastal hazard are the evacuation route map and the signs of evacuation direction in the easy place to find.

ECOLOGICAL STATE OF THE ATMOSPHERE OF ROSTOV-ON-DON IN 2000–2018

2020 ◽  
Author(s):  
V.L Gaponov ◽  
◽  
T.N. Savuskan ◽  
E.Y. Gaponova ◽  
Y.S. Matyushkin. ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Dioxide ◽  
Nitrogen Oxide ◽  
Sulphur Dioxide ◽  
Maximum Permissible Concentration ◽  
Quantitative Composition ◽  
Ecological State ◽  
Qualitative And Quantitative ◽  
Suspended Substances ◽  
The City

The article reduced a qualitative and quantitative composition of pollutants (suspended substances, sulphur dioxide, carbon monoxide, nitrogen dioxide, nitrogen oxide, formaldehyde, benz (a) pyrene) in the atmosphere of the city of Rostov-on-Don in 2000–2018 year. An assessment of their possible impact on human health when using this criterion is made, as the maximum permissible concentration

scholarly journals COMPARATIVE ANALYSIS OF QUALITATIVE AND QUANTITATIVE COMPOSITION IN FLAVONOIDS PHYSCIA STELLARIS (L.) NYL WHO GREW UP IN PLACES OF DIFFERENT ANTHROPOGENIC LOAD

2017 ◽  
pp. 153-158
Author(s):  
Рашит (Rashit) Габдулхаевич (Gabdulhaevich) Фархутдинов (Farkhutdinov) ◽  
Аркадий (Arkadij) Владимирович (Vladimirovich) Щербаков (Shcherbakov) ◽  
Зиля (Zilja) Равиловна (Ravilovna) Саитова (Saitova)
Keyword(s):  
Comparative Analysis ◽  
Secondary Metabolites ◽  
Antioxidant Status ◽  
Growth Response ◽  
Anthropogenic Load ◽  
Quantitative Composition ◽  
Flavonoid Content ◽  
Qualitative And Quantitative ◽  
Phenolic Substances ◽  
Different Levels

The studies was defined qualitative and quantitative composition of flavonoids in lichen species Physcia stellaris (L.) Nyl., Collected in habitats with different levels of anthropogenic load. Changes in the composition of flavonoids is considered in the literature as an indicator of the direction of the synthesis of secondary metabolites by plants to protect against adverse environmental influences. It was found that the most diverse number of members (128 compounds), phenolic substances found in the least contaminated RB Ishimbai area and the fewest (58 compounds) was detected in Sterlitamak. Analysis of qualitative and quantitative composition of flavonoids showed that in the area of Ishimbaisky samples were found to accumulate naringin, dihydroquercetin, quercetin. The samples obtained in Alsheyevsky District noted in content highs routine, but samples Sterlitamak – fizetina and naringenin. The calculation of the potential antioxidant status showed that the samples of Ishimbaisky district formed the highest level of protection phenolic substances. It showed no direct correlation between the growth response to environmental pollution and the level of flavonoid content in the thallus of lichens.

scholarly journals The Main Library of Ivanovo-Voznesensk: the History of Creation and Development (1865-1917)

2015 ◽  
pp. 92-97 ◽  
Author(s):  
Aleksei A. Soloviev
Keyword(s):  
20Th Century ◽  
Educational Institution ◽  
Public Library ◽  
Quantitative Composition ◽  
Early 20Th Century ◽  
Qualitative And Quantitative ◽  
Financial Position ◽  
History Of ◽  
The City

The article is devoted to the history of creation and development of Ivanovo-Voznesensk Public Library in the second half of the 19 - early 20th century. There are analyzed the qualitative and quantitative composition of the library, the financial position of the library, the necessity for such educational institution for the city.

scholarly journals A novel box for aerosol and droplet guarding and evacuation in respiratory infection (BADGER) for COVID-19 and future outbreaks

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hau D. Le ◽  
Gordon A. Novak ◽  
Kevin C. Janek ◽  
Jesse Wang ◽  
Khang N. Huynh ◽  
...  
Keyword(s):  
Respiratory Infection ◽  
Healthcare Providers ◽  
Airborne Particles ◽  
Risk Of Infection ◽  
Indirect Contact ◽  
Vacuum Suction ◽  
Qualitative And Quantitative ◽  
Additional Layer ◽  
Increased Risk ◽  
Design Construction

AbstractThe coronavirus disease 2019 (COVID-19) pandemic caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has infected millions and killed more than 1.7 million people worldwide as of December 2020. Healthcare providers are at increased risk of infection when caring for patients with COVID-19. The mechanism of transmission of SARS-CoV-2 is beginning to emerge as airborne spread in addition to direct droplet and indirect contact as main routes of transmission. Here, we report on the design, construction, and testing of the BADGER (Box for Aerosol and Droplet Guarding and Evacuation in Respiratory Infection), an affordable, scalable device that contains droplets and aerosol particles, thus minimizing the risk of infection to healthcare providers. A semi-sealed environment is created inside the BADGER, which is placed over the head of the patient and maintains at least 12-air changes per hour using in-wall vacuum suction. Multiple hand-ports enable healthcare providers to perform essential tasks on a patient’s airway and head. Overall, the BADGER has the potential to contain large droplets and small airborne particles as demonstrated by simulated qualitative and quantitative assessments to provide an additional layer of protection for healthcare providers treating COVID-19 and future respiratory contagions.

scholarly journals Anti-oxidative and antimicrobial activities of Hieracium pilosella L. extracts

2008 ◽  
Vol 73 (5) ◽  
pp. 531-540 ◽  
Author(s):  
Ljiljana Stanojevic ◽  
Mihajlo Stankovic ◽  
Vesna Nikolic ◽  
Ljubisa Nikolic
Keyword(s):  
Salmonella Enteritidis ◽  
Radical Scavenging ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Quantitative Composition ◽  
Minimal Inhibitory Concentrations ◽  
Qualitative And Quantitative ◽  
Scavenging Effect ◽  
Hieracium Pilosella ◽  
Radical Scavenging Effect

The anti-oxidative and antimicrobial activities of different extracts from Hieracium pilosella L. (Asteraceae) whole plant were investigated. The total dry extracts were determined for all the investigated solvents: methanol, dichloromethane, ethyl acetate and dichloromethane: methanol (9:1). It was found that the highest yield was obtained by extraction with methanol (12.9 g/100 g of dry plant material). Qualitative and quantitative analysis were performed by the HPLC method, using external standards. Chlorogenic acid, apigenin-7-O-glucoside and umbelliferone were detected in the highest quantity in the extracts. The qualitative and quantitative composition of the extracts depends on the solvent used. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging effect of the extracts was determined spectrophotometrically. The highest radical scavenging effect was observed in the methanolic extract, both with and without incubation, EC50 = 0.012 and EC50 = 0.015 mg ml-1, respectively. The antimicrobial activities of the extracts towards the bacteria (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Salmonella enteritidis and Klebsiella pneumoniae) and the fungi (Aspergillus niger and Candida albicans) were determined by the disc diffusion method. The minimal inhibitory concentrations were determined for all the investigated extracts against all the mentioned microorganisms.

scholarly journals Chemistry and Biology of Essential Oils of GenusBoswellia

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Hidayat Hussain ◽  
Ahmed Al-Harrasi ◽  
Ahmed Al-Rawahi ◽  
Javid Hussain
Keyword(s):  
Essential Oils ◽  
Current Knowledge ◽  
Biological Activities ◽  
Ethanolic Extract ◽  
Quantitative Composition ◽  
Volatile Constituents ◽  
Traditional Medicines ◽  
Qualitative And Quantitative ◽  
Synthetic Drugs ◽  
Explicit Consideration

The properties ofBoswelliaplants have been exploited for millennia in the traditional medicines of Africa, China, and especially in the Indian Ayurveda. In Western countries, the advent of synthetic drugs has obscured the pharmaceutical use ofBoswellia, until it was reported that an ethanolic extract exerts anti-inflammatory and antiarthritic effects. Frankincense was commonly used for medicinal purposes. This paper aims to provide an overview of current knowledge of the volatile constituents of frankincense, with explicit consideration concerning the diverseBoswelliaspecies. Altogether, more than 340 volatiles inBoswelliahave been reported in the literature. In particular, a broad diversity has been found in the qualitative and quantitative composition of the volatiles with respect to different varieties ofBoswellia. A detailed discussion of the various biological activities ofBoswelliafrankincense is also presented.

scholarly journals Tribological Performance of CoCrMo Alloys with Boron Additions in As-Cast and Heat-Treated Conditions

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 355
Author(s):  
Marco A. L. Hernandez-Rodriguez ◽  
Diego E. Lozano ◽  
Gabriela M. Martinez-Cazares ◽  
Yaneth Bedolla-Gil
Keyword(s):  
Boron Content ◽  
Tribological Performance ◽  
Secondary Phases ◽  
Scanning Electronic Microscopy ◽  
Electronic Microscopy ◽  
Hardness Tests ◽  
Heat Treated ◽  
Cocrmo Alloys ◽  
Cast Condition ◽  
Ball On Disc

The present study evaluates the effect of boron additions on the tribological performance of CoCrMo alloys. The alloys were prepared with boron ranging from 0.06 to 1 wt%. The materials were characterized using metallographic techniques, scanning electronic microscopy, and roughness and hardness tests. Tribological evaluation was made by means of ball-on-disc tests for sliding distances of 4, 8 and 12 km. The samples were in the as-cast condition and after a heat treatment at 1200 °C for 1 h, finished by water quenching. The results showed that wear resistance was influenced by the microstructure and the number of secondary phases. The volume loss decreased as the boron content increased. Due to hard phases, abrasion wear was observed. Delamination fatigue was also detected after long sliding distances. Both wear mechanisms diminished in higher boron content alloys.

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