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    Wyświetlanie 1-14 z 14
    Tytuł:
    The effect of nitrogen fertilization on the physical features, yield and chemical composition of sugar beet roots
    Zaleznosc cech fizycznych, plonowania i skladu chemicznego buraka cukrowego od nawozenia azotem
    Autorzy:
    Szklarz, J
    Wojcik, S
    Omar, S
    Powiązania:
    https://bibliotekanauki.pl/articles/804080.pdf
    Data publikacji:
    1993
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    cechy fizyczne
    sklad chemiczny
    buraki cukrowe
    nawozy azotowe
    nawozenie
    plonowanie
    Opis:
    Three years field experiments were carried out in order to estimate the influence of differentiated nitrogen fertilization on physical features, yielding and some elements of chemical composition of sugar beet. The highest yields of roots were found in roots when 120 and 160 kg N/ha were used. The nitrogen fertilization has significantly modified the hight of protrusion of roots above the soil level. The value of yielding coefficient indicate that nitrogen fertilization affected more leaves yield than roots yield.
    W latach 1983-1985 przeprowadzono badania, celem których było określenie wpływu nawożenia azotem na cechy fizyczne, plonowanie i niektóre elementy składu chemicznego buraka cukrowego. Przeprowadzone doświadczenia wykazały, że najwyższy plon korzeni uzyskano przy nawożeniu 120 i 160 kg N/ha. Nawożenie azotowe w istotny sposób modyfikowało wysokość wyrastania korzeni nad powierzchnię gleby. Wielkość współczynnika plonowania wskazuje, że nawożenie azotem w większym stopniu wpływało na plon liści, aniżeli na plon korzeni.
    Źródło:
    Zeszyty Problemowe Postępów Nauk Rolniczych; 1993, 399; 251-254
    0084-5477
    Pojawia się w:
    Zeszyty Problemowe Postępów Nauk Rolniczych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical features and yield of sugar beet depending on the composition of seed coat
    Cechy fizyczne i plonowanie buraka cukrowego w zaleznosci od zroznicowanego skladu otoczki
    Autorzy:
    Szklarz, J
    Wojcik, S
    Omar, S
    Powiązania:
    https://bibliotekanauki.pl/articles/810377.pdf
    Data publikacji:
    1993
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    sklad chemiczny
    cechy fizyczne
    buraki cukrowe
    otoczki
    plonowanie
    otoczkowanie nasion
    Opis:
    The aim of experiment carried out at Agricultural Experimental Station in Felin was evaluation of some industrial wastes as a component for seed coating. The experiment regarded comparison of yield and physical features of sugar beet affected by different seed coat composition. It has been found, that magnesium oxide commonly used in seed coating can be successfuly replaced by other components. The highest yield of sugar beet roots (49.6 ton per hectare) has been obtained when seed coat was made of alkaline magnesium carbide from wastes GA-8. High yield of roots there were stated as well in objects, where as a seed coat were used pure magnesium carbide (42.7 t/ha) and ashed magnesium shavings (47.1 l/ha). The best technological quality of roots has been stated in object 3 (ashed magnesium shavings), where dry mass and sugar content were highest (22.3 and 18.0 percent respectively). Moreover there were law quantity of soluble ash (0.475 %) and alpha-amine nitrogen (0.0268 %). Biological yield of sugar from this object was highest and reached 8.48 t per hectare.
    W latach 1983-1985 przeprowadzono badania, celem których było określenie możliwości wykorzystania krajowych odpadów surowcowych jako składnika otoczki oraz porównanie cech fizycznych i plonowania buraka cukrowego pod wpływem różnego składu otoczki. Uzyskane wyniki wskazują, że tlenek magnezu może być w otoczce zastąpiony innymi komponentami. Najwyższe plony korzeni uzyskano stosując zasadowy węglan magnezu z odpadów GA-8 (49,6 t z ha). Wysokie plony korzeni otrzymano również w kombinacji 2 (47,2 t z ha), oraz stosując produkt spalania wiórów magnezowych (47,1t z ha). Najlepszą jakością technologiczną charakteryzowały się korzenie w kombinacji 3. Zawartość cukru wynosiła w tej kombinacji 18,0 %, suchej masy - 22,34 %, popiołu rozpuszczalnego - 0,475 % zaś azotu α - aminowego 0,0268%. Również biologiczny plon cukru byt najwyższy w tej kombinacji i wynosił 8,481 z ha.
    Źródło:
    Zeszyty Problemowe Postępów Nauk Rolniczych; 1993, 399; 247-250
    0084-5477
    Pojawia się w:
    Zeszyty Problemowe Postępów Nauk Rolniczych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Management model for water demand using the WEAP tool: Case of Setif Province – Algerian highlands
    Autorzy:
    Bouznad, Imad E.
    Elahcene, Omar
    Belksier, Mohamed S.
    Powiązania:
    https://bibliotekanauki.pl/articles/292880.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    different scenarios
    unmet demand
    wastewater
    water
    water evaluation and planning (WEAP)
    Opis:
    The pressure on the use of water and climate change has caused a decreased availability of water resources in semi-arid areas in the last decades. The Setif Province is one of the semi-arid zones of Algeria as it receives an average less than 400 mm∙year–1. The question of the evolution of demographic pressures and their impacts on water resources arise. By applying WEAP software (water evaluation and planning), the aim is to develop a model of water resources management and its utilization, assess the proportion of the resource-needs balance and analyse the future situation of water according to different scenarios. This approach allows to identify the most vulnerable sites to climatic and anthropogenic pressures. The estimation of the needs for drinking water and wastewater in the Setif Province has shown that these needs increase over time and happening when the offer is not able to cover the demand in a suitable way. It is acknowledged that there is a poor exploitation of water resources including underground resources, which translates into unmet demand in all sites of demand.
    Źródło:
    Journal of Water and Land Development; 2020, 45; 19-28
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the activity of ZnO-SnO2 nanocomposite against bacteria and fungi
    Autorzy:
    Omar, K.
    Meena, B. I.
    Muhammed, S. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/109343.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    ZnO-SnO2 nanocomposite
    bacteria
    fungi
    sol-gel method
    Opis:
    ZnO-SnO2 nanocomposite was prepared by the sol-gel method. The as-prepared nanocomposite was characterized by X-ray diffraction (XRD), scanning electron micrograph (SEM-EDX), FTIR and UV-Visible spectrometer analysis techniques. The average particle size of nanocomposite was calculated from the XRD study. The average particle size of the prepared nanocomposite was 22 nm. According to the UV-Visible spectrum, the band gap value of 5.06 eV was obtained for the ZnO-SnO2nanocomposite. From the analysis techniques it was found that the metal oxides of ZnO-SnO2 mainly consist of ZnO and SnO2 metal oxides. The antibacterial and antifungal activities of the ZnO-SnO2nanocomposite were studied against Staphylococcus aureus (ATCC25923), Listeria monocytogenes (ATCC 11994)(Gram-positive), Salmonella typhi (ATCC14028), Escherichia coli (ATCC 25922)Gram-negative), Candida albicans (ATCC10231), and Aspergillus niger (ATCC 16404) (fungi)by two methods through the turbidity method or reading optical density and inhibition zone, which were carried out in the absence of irradiation. We observed an effective antibacterial and antifungal activity of the ZnO-SnO2 nanocomposite against bacteria and fungi.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2016, 52, 2; 754-766
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozklad celulozy przez mezofilne bakterie glebowe z rodzaju Clostridium
    Autorzy:
    Omar-El, Haj K
    Gorska, E.B.
    Russel, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/808082.pdf
    Data publikacji:
    2005
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    celuloza
    bakterie glebowe
    celulazy
    enzymy
    biodegradacja
    bakterie mezofilne
    Clostridium
    Opis:
    Celuloza w środowisku naturalnym podlega rozkładowi biologicznemu przez szeroką grupę fizjologiczną tzw. mikroorganizmów celulolitycznych. W warunkach beztlenowych przemiany celulozy są przeprowadzane przez przetrwalnikujące bakterie z rodzaju Clostridium. Literatura naukowa donosi głównie o rozkładzie celulozy przez termofilny szczep bakterii C. thermocellum. Nieliczne prace badawcze informują natomiast o rozkładzie celulozy prowadzonym przez mezofilne bakterie z rodzaju Clostridium. W prezentowanej pracy wyizolowano trzy szczepy bakterii z rodzaju Clostridium i zbadano ich aktywność celulolityczną. Wyizolowane bakterie zidentyfikowano jako C. celerecrescens, C. cellulolyticum i C. lentocellum. Wszystkie wyizolowane szczepy bakterii produkowały FP-azę, CMC-azę i celobiazę. Podczas wzrostu w warunkach beztlenowych w pożywce z dodatkiem celobiozy, bibuły filtracyjnej i mikrokrystalicznej celulozy Avicel jako jedyne źródło węgla oznaczono produkty fermentacji metodą chromatografii gazowej. Badane gatunki bakterii metabolizowały celobiozę i celulozę Avicel do kwasu octowego i masłowego oraz do etanolu. Natomiast bibułę filtracyjną do kwasu propionowego i izo-walerianowego i etanolu. We wszystkich badanych próbkach wykrywano śladowe ilości propanolu, butanolu i kwasu masłowego.
    Cellulose can be biologically degraded by a wide range of microorganisms. Under anaerobic condition cellulose is transformed by spore-forming bacteria belonging to genera Clostridium. Most papers dealing with anaerobic degradation of cellulose are connected with thermophilic bacteria Clostridium thermocellum. Only a few information could be found in literature about anaerobic transformation of cellulose by mesophilic Clostridia. In the present paper three strains of mesophilic, anaerobic, spore-forming bacteria were isolated from the soil and its cellulolytic activity was investigated. The isolated bacteria were identified as Clostridium lentocellum, C. cellulolyticum and C. celerecrescens. All isolated strains were able to produce FP-ase, CMC-ase and cellobiase. During the growth of investigated strains under anaerobic condition in medium amended with cellobiose, filter paper and Avicel microcrystalline cellulose as a sole carbon source the different fermentation products could be found using gas chromatography. Investigated bacterial strains metabolised cellobiose and Avicel cellulose mainly to acetic and butyric acids and ethanol, and filter paper to propionic and iso-valerianic acids and ethanol. In all investigated samples the trace amounts of propanol and butanol were also found.
    Źródło:
    Zeszyty Problemowe Postępów Nauk Rolniczych; 2005, 506; 317-324
    0084-5477
    Pojawia się w:
    Zeszyty Problemowe Postępów Nauk Rolniczych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of DNA damage using chromosomal aberrations assay in lymphocytes of waterpipe smokers
    Autorzy:
    Alsatari, Enas S.
    Azab, Mohammad
    Khabour, Omar F.
    Alzoubi, Karem H.
    Sadiq, May F.
    Powiązania:
    https://bibliotekanauki.pl/articles/2180083.pdf
    Data publikacji:
    2012-06-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    waterpipe
    smoking
    cigarette
    chromosomal aberrations
    Opis:
    Objectives: The aim of this study was to investigate the genotoxicity of waterpipe smoking in the lymphocytes of waterpipe smokers using chromosomal aberrations (CAs) assay. Materials and Methods: Fifty waterpipe smokers and 18 healthy nonsmokers volunteered to participate in the study. Additionally, 18 heavy cigarette smokers were recruited for comparison. Chromosomal aberrations (CAs) assay was used to evaluate DNA damage in the lymphocytes. Results: The results showed that similarly to cigarette smoking, waterpipe smoking significantly increased the frequencies of CAs (p < 0.01). In addition, the frequencies of CAs increased with more waterpipe use. Conclusions: Waterpipe smoking causes DNA damage to lymphocytes and the damage increases with more waterpipe use.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2012, 25, 3; 218-224
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Formation of Fundamental Structure of Solar Radio Burst Type II Due X6.9 Class Solar Flare
    Autorzy:
    Zainol, N. H.
    Hamidi, Z. S.
    Shariff, N. N. M.
    Ali, Marhana Omar
    Husien, Nurulhazwani
    Sabri, S. N. U.
    Monstein, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1190115.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Sun
    solar burst
    type II
    radio region
    X-ray region
    solar flare
    Coronal Mass Ejections (CMEs)
    Opis:
    A vigorous solar flare event marked on the spectrometer of the CALLISTO data, being one of the highest solar flare event that successfully detected. The formation of solar burst type II in meter region and their associated with X6. 9-class solar flares have been reported. The burst has been observed at the Blein Obsevatory, Switzerland, which detected by the Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) system in the range of 170-870 MHz in the two polarizations of left and right circular polarization. It occurred between 08:01 UT to 08:08 UT within 7 minutes. The Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory CALLISTO spectrometer is a solar dedicated spectrometer system that has been installed all over the world to monitor the Sun activity in 24 hours. The growth of this burst is often accompanied by abundance enhancement of particles which may take the form of multiple independent drifting bands or other forms of fine structure. Due to the results, the drift rate of this burst is 85.71 MHz s-1, which is considered as a fast drift rate. The burst detected using CALLISTO also being compared to results detected by X-ray GOES data. Both different electromagnetic spectrum shows the exact time. The observations of the burst being discussed in details.
    Źródło:
    World Scientific News; 2016, 35; 30-43
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heart-shape Active Region 2529 Producing Strong M6.7 class Solar Flare and Gradual Coronal Mass Ejections
    Autorzy:
    Hamidi, Z. S.
    Omar Ali, M.
    Nurul, Hazwani Husien
    Sabri, S. N. U.
    Zainol, N. H.
    Shariff, N. N. M.
    Monstein, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1179601.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Gradual Coronal Mass Ejections
    Heart-shape active region
    Sun
    X-ray region
    solar flare
    Opis:
    The Centre of the Sun is very important to be study because this layer is where the nuclear reaction will be occurred. During large event pre-flare usually continues a few minutes and followed by impulsive phase about 3 to 10 minutes. Solar storms such as solar flare and Coronal Mass Ejections are frequently occurred on the area of the Sun that have strong magnetic field or known as active region The release of the stored free magnetic energy that probably drives a CME can take many forms including (predominantly) mechanical in the form of an expanding CME and erupting filament, electromagnetic emission in the form of a flare, and also in the acceleration of energetic particles, magnetic field reconfiguration and bulk plasma motion. In this study, the data of active region of the Sun was taken from official website of the Langkawi National Observatory. The image of the active region was observed by using 11-inch Celestron telescope with solar filter. This data confirms that there was a strong M class of solar flare during the day due to eruption of AR 2529 was occurred on 18th of April. From the x-ray flux data also, it can be observed that few days before M6.7 class solar flare occurred, there were several C classes of flare. The evolution of small AR 2529 to a big heart-shape forms an eruption that producing strong M6.7 class of flare and three gradual CMEs. This strong flare caused significant impact around the high technologies of Pacific Ocean by fading the signal at frequencies below 15 MHz.
    Źródło:
    World Scientific News; 2017, 74; 181-193
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geo-effective Disturbances from the “Beta-Gamma-Delta” Magnetic Fields on Active Region AR 2403
    Autorzy:
    Sabri, S. N. U.
    Hamidi, Z. S.
    Shariff, N. N. M.
    Monstein, C.
    Zainol, N. H.
    Ali, M. Omar
    Hussien, Nurul Hazwani
    Powiązania:
    https://bibliotekanauki.pl/articles/1192069.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Sun
    Solar Radio Burst Type IV
    X-ray region
    Solar flare
    active region AR 2403
    Opis:
    This moving solar radio burst type IV, which lies in between 980 – 1260 MHZ was observed using Compound Astronomical Low-Cost Low- Frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) spectrometer and will discussed in detail. CALLISTO system was used and the data were recorded. From BLEN5M’s Radio Flux Density data, it shown that a brief description of the formation of a dynamic formation of solar radio burst type IV due to an active region, AR 2403. This event proved that solar radio burst type IV has a broadband continuum features and has strong pulsations in some range of time. In this event it was took about 8 minutes and it can be high in possibility solar flare and CMEs event followed due to this event. AR 2403 remained active and produced an X- class solar flares and it showed “Beta- Gamma-Delta” magnetic field that gives solar flares which can make geo-effective disturbance to our earth satellite and we have to investigate how plasma – magnetic field in the solar corona which can produce suprathermal electron pulsation about 8 minutes. In this event, it has solar wind speed in 364.8 km/sec and solar wind density in 11.0 protons/cm3.
    Źródło:
    World Scientific News; 2016, 37; 1-11
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emergence of an Impulsive CMEs Related To Solar Radio Burst Type III Due To Magnetic Filament Eruption
    Autorzy:
    Ali, M. Omar
    Shariff, N. N. M.
    Hamidi, Z. S.
    Husien, Nurul Hazwani
    Sabri, S. N. U.
    Zainol, N. H.
    Monstein, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192085.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Sun
    Coronal Mass Ejections (CMEs)
    solar burst type III
    magnetic filament
    Opis:
    During solar activity the energy particles of the sun released due to solar flare, Coronal Mass Ejections (CMEs), coronal heating as well as sunspot. Solar radio burst will be observed in the presence of solar activity such solar flare, CMEs and solar prominence as the indicator for those events to happen. During the peak of solar cycle, the filaments are present due to the active magnetic field and solar storm’s explosion. This type of solar radio burst normally can be seen in the phase of impulsive solar flare. Therefore, it is crucial to understand field line connectivity in flare and the access of flare accelerated particle to the earth. In this study, we highlighted on the observation of solar radio burst type III on 9th of May at 05:31 UT till 05:44 UT. The event was successfully recoded by e-CALLISTO using BLEINSW radio telescope. The Solar Radio Burst Type III that had been observed was related to the Coronal Mass Ejections and the mechanisms that trigger the events have been discussed. It is shown that the CMEs is believed to happen because of the magnetic filament that connected to active region (AR) 2339 was erupted, and combination of two wild filament produced a bright CMEs. Fortunately, the expanding cloud does not appear to be heading for earth.
    Źródło:
    World Scientific News; 2016, 37; 168-178
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Tendencies Group Type III Burst Form Type II Burst During Low activity
    Autorzy:
    Hamidi, Z. S.
    Mokthtar, Fatin Nabila
    Shariff, N. N. M.
    Ali, Marhana Omar
    Husien, Nurulhazwani
    Sabri, S. N. U.
    Zainol, N. H.
    Monstein, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191365.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Coronal Mass Ejections (CMEs)
    X-ray region
    radio region
    solar burst
    sun
    sun type II
    sun type III
    Opis:
    Using the e-CALLISTO network radio observations on 1st June 2015, we present an analysis of the complex type III and type II solar radio bursts during low activity. This event occurred on 1st July 2015 at 13:52 UT (complex solar burst type III) and 13:40 UT - 13:44 UT (solar burst type II). Solar burst type detected at (i) BIR, (ii) BLENSW, (iii) Essen, (iv) Glascow (v) Osra, (vi) Rwanda. The spectral shape consists of high flux densities at meter wavelengths. The energy going into plasma heating during each flare was estimated by computing the time evolution of the energy content of the thermal plasma and obtaining the peak value. This constitutes a lower limit to the thermal energy, since it does not account for the cooling of the plasma prior to this time nor to any heating at later times. It is also believed that the meter wavelength branch of the this type III spectrum may be attributable to second-phase accelerated electrons to form type II burst. There are four sunspots of the active regions (AR2355, AR2356, AR2357, and AR2358) during this event. The solar wind recorded during the event is 342.4 km/s and the density of the proton recorded is 4.1 protons/cm3. Moreover, the are some evidence that radio-quiet CMEs mostly came from the edges of the sun. The main goal of this study was to determine whether is there any possibilities that the radio burst can be formed even the Sun is at low activity and this event is one of the candidate events.
    Źródło:
    World Scientific News; 2016, 34; 121-134
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Development of the X2-Class of flares with Presence of Type IV burst and Single Type III burst in Low Frequency (20-85 MHz) on 5th May 2015
    Autorzy:
    Sabri, S. N. U.
    Hamidi, Z. S.
    Shariff, N. N. M.
    Zainol, N. H.
    Syazwan, Nabilah Ramli
    Ali, Marhana Omar
    Husien, Nurulhazwani
    Monstein, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191466.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Sun
    solar burst
    III
    IV
    X-ray region
    solar flare
    Active Region 2335
    Opis:
    The plasma-magnetic field interaction in the solar corona is caused exploration of suprathermal electron population have been made to study about the phenomena solar radio burst. This burst only took about approximately 2 minutes to produce X2- class of solar flares which occurred at 22:10 UT till 22:11UT. The wave-wave interaction and wave-particle interaction influenced the characteristic structures of the emission. The CALLISTO spectrometer has been used to detect and record the Type IV and Type III occurred during 22:07UT till 22:11 UT and it only took about 3.30 minutes to occur. The range of frequency of this burst 20-85 MHz and data is from ROSWELL-NM observatory. With the presence of the data, we aim to determine the causes of the Solar Radio Burst Type IV produced Type III burst in several minutes and describe briefly about the formation and dynamics of solar radio burst type IV occurred on active region, AR2335 which also produced beta-gamma magnetic field. This event showed the strong pulsation and a broadband pattern with details about Type IV burst, then Type III burst present in fast drift. AR 2335 is the most active region and produced X2-class of solar flares which has solar wind speed about 361.6km/second and proton density about 4.3 protons/cm3 in the solar corona. AR 2335 harbor energy for X2-class from 6-H to 24-H observation on X-Ray solar flares have been recorded. The data showed that it has a strong energy electrons presence during the burst occurred in the active region and this class of solar flares are more powerful which has potential to cause radio blackout and long lasting space weather storms. As the conclusion, the sun activity showed on 5th May 2015 has quasi-periodic pulsation that has continuum and drift in lower frequency. The temperature that corona took to extend from the top of a narrow transition region still be as mysterious properties.
    Źródło:
    World Scientific News; 2016, 40; 188-198
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron-transfer complexation of morpholine donor molecule with some π – acceptors: Synthesis and spectroscopic characterizations
    Autorzy:
    Al-Wasidi, Asma S.
    Al-Jafshar, Nawal M.
    Al-Anazi, Amal M.
    Alosaimi, Eid H.
    Refat, Moamen S.
    El-Zayat, Lamia
    Al-Omar, Mohamed A.
    Naglah, Ahmed M.
    El-Nour, K.M. Abou
    Powiązania:
    https://bibliotekanauki.pl/articles/778928.pdf
    Data publikacji:
    2019
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Morpholine
    π-acceptor
    CT complex
    photometric titration
    infrared
    Benesi-Hildebrand
    Opis:
    Morpholine is an interesting moiety that used widely in several organic syntheses. The intermolecular charge-transfer (CT) complexity associated between morpholine (Morp) donor with (monoiodobromide “IBr”, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone “DDQ”, 2,6-dichloroquinone-4-chloroimide “DCQ” and 2,6-dibromoquinone-4-chloroimide “DBQ”) π–acceptors have been spectrophotometrically investigated in CHCl3 and/or MeOH solvents. The structures of the intermolecular charge-transfer (CT) were elucidated by spectroscopic methods like, infrared spectroscopy. Also, different analyses techniques such as UV-Vis and elemental analyses were performed to characterize the four morpholine [(Morp)(IBr)], [(Morp)(DDQ)], [(Morp)(DCQ)] and [(Morp)(DBQ)] CT-complexes which reveals that the stoichiometry of the reactions is 1:1. The modified Benesi-Hildebrand equation was utilized to determine the physical spectroscopic parameters such as association constant (K) and the molar extinction coefficient (ε).
    Źródło:
    Polish Journal of Chemical Technology; 2019, 21, 4; 82-88
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plants take action to mitigate salt stress: Ask microbe for help, phytohormones, and genetic approaches
    Autorzy:
    Hewedy, Omar A.
    Mahmoud, Ghada Abd-Elmonse
    Elshafey, Naglaa F.
    Khamis, Galal
    Karkour, Ali M.
    Abdel Lateif, Khalid S.
    Amin, Basma H.
    Chiab, Nour
    El-Taher, Ahmed M.
    Elsheery, Nabil I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174285.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    Bacillus
    ion homeostasis
    osmoprotectants
    osmotic stress
    photosynthesis
    ROS scavenging
    Opis:
    Global agriculture is a pivotal activity performed by various communities worldwide to produce essential human food needs. Plant productivity is limited by several factors, such as salinity, water scarcity, and heat stress. Salinity significantly causes short or long-term impacts on the plant photosynthesis mechanisms by reducing the photosynthetic rate of CO2 assimilation and limiting the stomatal conductance. Moreover, disturbing the plant water status imbalance causes plant growth inhibition. Up-regulation of several plant phytohormones occurs in response to increasing soil salt concentration. In addition, there are different physiological and biochemical mechanisms of salt tolerance, including ion transport, uptake, homeostasis, synthesis of antioxidant enzymes, and osmoprotectants. Besides that, microorganisms proved their ability to increase plant tolerance, Bacillus spp. represents the dominant bacteria of the rhizosphere zone, characterised as harmless microbes with extraordinary abilities to synthesise many chemical compounds to support plants in confronting salinity stress. In addition, applying arbuscular mycorrhizal fungi (AMF) is a promising method to decrease salinity-induced plant damage as it could enhance the growth rate relative to water content. In addition, there is a demand to search for new salt-tolerant crops with more yield and adaptation to unfavourable environmental conditions. The negative impact of salinity on plant growth and productivity, photosynthesis, stomatal conductance, and changes in plant phytohormones biosynthesis, including abscisic acid and salicylic acid, jasmonic acid, ethylene, cytokinins, gibberellins, and brassinosteroids was discussed in this review. The mechanisms evolved to adapt and/or survive the plants, including ion homeostasis, antioxidants, and osmoprotectants biosynthesis, and the microbial mitigate salt stress. In addition, there are modern approaches to apply innovative methods to modify plants to tolerate salinity, especially in the essential crops producing probable yield with a notable result for further optimisation and investigations.
    Źródło:
    Journal of Water and Land Development; 2022, 55; 1--16
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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