Response of photosynthetic apparatus in some sunflower cultivars, i.e., S.28111, Hysun-33, Hysun-39, and SF0049, to salt, drought, combined stresses were studied. The stress caused severe damage as compared single stress. maximum quantum yield PSII, phenomenological fluxes, plastoquinone pool size, performance indexes, driving force absorption greatly affected by the Among produced synergistic effect (greater damage) Hysun-33 cross-tolerance (lesser S.28111. Similarly, concerning ion...

Excel is both ubiquitous and easily understandable. Most people from every walk of life know how to use MS office spreadsheets. Students are also familiar with students spreadsheets for data analysis. Besides basic Excel, some important aspects highlighted in this article. can be used visualize effects various parameters a physical system. It as simulating tool; simulation wind has been done through study. Examples Lissajous figures damped harmonic oscillator presented

We report the recording of new highly resolved Fourier transform spectra neutral praseodymium atom. With help we found about 9000 lines from which—in region 3260 to 9880 Å—1194 could be classified as transitions between energy levels Pr atom and 19 ion. Twenty-three atomic odd parity one even were discovered during this first examination. The might very helpful for further laser spectroscopic investigations hyperfine structure I II transitions.

In this paper we determine the Weibull parameters (k and c) using four methods. Method of Moments, Empirical Method, Energy Pattern Maximum likelihood have been employed to compare values k c. The daily wind speed data (obtained from Karachi Meteorological office) Jiwani (Balochistan, Pakistan) town over a period 10 years (1998-2007) is used estimate parameters. mean was predicted c by A significant agreement found in measured speed.

The hyperfine (hf) structure of some spectral lines the praseodymium atom has been investigated by laser-induced fluorescence method in a hollow cathode discharge lamp. We report discovery 18 new energy levels even parity and 22 odd their magnetic dipole hf interaction constants A . Using these newly discovered levels, 268 were classified means laser spectroscopy, 97 them excitation 171 via fluorescence. In addition, 23 lines, observed Fourier transform spectrum, wavenumbers patterns.

The analysis of Lakhra Coal to determine its total carbon content and ash is reported by calibration-free laser-induced breakdown spectroscopy (CF-LIBS). in coal are key parameters for efficient energy u sepower plants. optical emission spectrum contains spectral lines Ca, Si, Fe, Ti, Mg, Na, K, Li, Al, C together with traces Ba Sr. excitation temperature electron number density the laser-produced plasma were estimated using a Boltzmann plot Stark broadened Hα line, respectively....

We report the discovery of about 140 new energy levels neutral praseodymium atom, found by means laser-induced fluorescence spectroscopy. Their has been determined with an uncertainty 0.010 cm −1 using a wave number calibrated Fourier-transform spectrum.

In this contribution, we present analysis of the total carbon contents and major constituents in Reference Coal sample known concentration (SARM 20) Pakistani Thar samples using laser induced breakdown spectroscopy (LIBS). A high-power Q-switched Nd:YAG Laser, (532nm, 5ns pulse width 10 Hz repletion rate) was used to produce plasma air optical emission spectra were registered a HR 4000 spectrometer covering wavelength region from 200 nm 1100 nm. The spectrum produced plume contains atomic...

Experimental investigations of Pr I spectral lines were performed by means laser induced fluorescence spectroscopy, using a hollow cathode discharge lamp as source free atoms. The wavelengths for the excitation found help highly resolved Fourier transform spectrum. Altogether we excited 236 unclassified and analysed their hyperfine structure, which led, together with measured observed lines, to discovery 32 new even parity 38 odd fine structure energy levels. These levels allow classify more...

Abstract Background A new approach based on the Newton–Gauss method is used to find Weibull parameters. Results Python program was developed employ method. It implemented parameters and wind potential of Pakistan’s eight cities (Hyderabad, Khuzdar, Multan, Quetta, Bahawalpur, Islamabad, Lahore, Peshawar). Wind speed data recorded at an interval ten minutes for 2016 implement a calculate potential. To compare values parameters, five known methods, empirical method, moments, energy pattern...

Cobalt (Co) doped magnesium hydroxide Mg(OH) 2 nanoparticles are synthesized by a surfactant-free co-participation method. Scanning electron microscopy (SEM) images show nanometer size particles in spherically shaped particle-like morphology. Synthesis of these nanocrystals involves the formation monomeric MgOH[Formula: see text] ions as precursor for nuclei which finally evolves spherical X-ray diffraction (XRD) confirms hexagonal crystal structure samples. With increasing Co concentration,...

Abstract In this study, Chenopodium murale Linn. extracts have been evaluated for its in vitro antioxidant, enzyme inhibition, and vivo neuropharmacological properties streptozotocin (STZ)-induced memory impairment rat model. First, the plant was subjected to extraction fractionation, then quantitative phytochemical analysis performed estimate major groups extract where high amounts of phenolics saponins were detected crude chloroform extract. The highest total phenolic contents, flavonoid...

Sustainable effect of a nitrogen-fixing bacterium Sinorhizobium meliloti on nodulation and photosynthetic traits (phenomenological fluxes) in four leguminous plants species under low moisture stress (20–25% soil content) environment was studied. isolated from fenugreek (Trigonella foenum-graecum) root nodules, later, it cultured purified. Nodulation ability the presence S. were tested plant species, that is, kidney bean (cv. lobia-2000), black NM-97), mung NM-2006) chickpea Pb-2008). Plants...

Abstract Background Mathematical modeling provides grounds for understanding scientific systems theoretically. It serves as a guide experimentalists in determining directions of investigation. Recently, the Covid-19 pandemic has caused disturbances almost every walk life. Scientists have played their role and continued research on effects pandemic. Various mathematical models been used different branches science (Djilali et al. Phys Scr 96 12 124016, 2021; Math Biosci Eng 18(6):8245–8256,...

A Graphical User Interface (GUI) teaching tool to teach different vectors modules college and undergraduate students have been developed. The Physics Mathematics can benefit from these executable spreadsheets for practicing vector algebra with minimum inputs through diagrams answers as output. are employed calculate resolution, addition, projection, multiplication because they ubiquitous. Some GUI on available online gives the results, whereas this shows calculation steps reach which helps...