The advent of civilization has made humans dependent on plants for food and medicine,leading to the intensification of agricultural production.The intense cultivation of crops has resulted in the depletion of availabl...The advent of civilization has made humans dependent on plants for food and medicine,leading to the intensification of agricultural production.The intense cultivation of crops has resulted in the depletion of available nutrients from soil,thereby demanding the application of excess nutrients to soil to improve yield.Thus,mineral fertilizer discovery and application have,in many ways,contributed greatly to meeting global food demands.However,aside from the positive effects of mineral fertilizers,their excessive application to soil produces large amounts of pollutants that affect environmental sustainability.This necessitates the study of the major mineral fertilizer elements(nitrogen(N),phosphorus(P),and potassium(K)),the forms in which they are applied to soil,and their chemistry/reactions in soil.Here,we reviewed the forms of different N,P,and K mineral fertilizers to provide current knowledge on their constituents,the chemistry of N,P,and K in soil to understand the reactions they undertake in soil,the efficient methods of fertilizer application for environmental sustainability,the effects of mineral fertilizer loss to the environment,and improved fertilization technologies for environmental sustainability.Nanofertilizers are a promising technology for sustainable agricultural production and are discussed in detail in this review.展开更多
<span style="font-family:Verdana;">The new coronavirus called SARS-CoV-2 is a new type of virus named as COVID-19. Although, </span><span style="font-family:Verdana;">it has </...<span style="font-family:Verdana;">The new coronavirus called SARS-CoV-2 is a new type of virus named as COVID-19. Although, </span><span style="font-family:Verdana;">it has </span><span style="font-family:Verdana;">few similarities with pandemic flu viruses</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the respiratory system and immune system are damaged through the viruses infected the population wh</span><span style="font-family:Verdana;">o</span><span style="font-family:Verdana;"> has weakened immunity. SARS-CoV-2 spread</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> when people don’t have the sign and symptoms. This virus COVID-19 appears to spread more easily than the flu, and asymptomatic transmission may account for a greater proportion of COVID-19’s spreader over the World. In inundation of the current understanding</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the roles of insect vectors are helping in the transmission of viral pathogens as well and the possible roles of some newly joined insects in the mechanical transmission of COVID-19.</span><span style="font-family:Verdana;"> We also specifically provide the prevention and control methods related to contamination, disease burden, risk pattern in the family, near and dear to maintain the precision of social distancing and development of the immune system to fight against SARS-CoV-2.展开更多
Synthesis of a natural glycine-rich heptacyclopeptide mahafacyclin A （7） was accomplished by solution-phase technique of peptide synthesis via coupling of tetrapeptide unit Boc-L-Thr-L-Ile-L-Leu-Gly-OH with tripepti...Synthesis of a natural glycine-rich heptacyclopeptide mahafacyclin A （7） was accomplished by solution-phase technique of peptide synthesis via coupling of tetrapeptide unit Boc-L-Thr-L-Ile-L-Leu-Gly-OH with tripeptide unit L-Val-L-Phe-Gly-OMe followed by cyclization of linear heptapeptide fragment. Structure of the newly synthesized cyclopolypeptide was confirmed by means of chemical, spectroscopic analyses and subjected to antibacterial, antifungal and anthelmintic activity studies. Bioactivity results showed potent antifungal and anthelmintic activities of the synthesized peptide against dermatophytes T. mentagrophytes, M. audouinii and earthworm species M. kon-kanensis, P. corethruses and E. eugeniea.展开更多
For the polynomial <em>P</em> (<em>z</em>) = <img src="Edit_94d094e0-dc15-4e21-b6cf-3fcb179d54b0.bmp" alt="" /><em>a<sub>j</sub>z<sup>j</sup...For the polynomial <em>P</em> (<em>z</em>) = <img src="Edit_94d094e0-dc15-4e21-b6cf-3fcb179d54b0.bmp" alt="" /><em>a<sub>j</sub>z<sup>j</sup></em>, <em>a</em><sub><em>j </em></sub>≥ <em>a</em><sub><em>j</em>-1</sub>, <em>a</em><sub>0</sub> > 0, <em>j</em> = 1, 2, …, <em>n</em>, <em>a<sub>n</sub></em> > 0, a classical result of Enestr<span style="white-space:nowrap;"><span style="white-space:nowrap;">ö</span></span>m-Kakeya says that all the zeros of <em>P</em> (<em>z</em>) lie in |<em>z</em>|≤ 1. This result was generalised by A. Joyall and G. Labelle, where they relaxed the non-negativity condition on coefficients. It was further generalized by M.A Shah by relaxing the monotonicity of some coefficients. In this paper, we use some known techniques and provide some more generalizations of the above results by giving more relaxation to the conditions.展开更多
With the help of the solid phase peptide synthesizing method, we synthesized Kalata B2 cyclotide and the final product was purified by preparative HPLC. The sequence of Kalata B2 is GLPVCGETCFGGTCNTPGCSCTWPICTRD and i...With the help of the solid phase peptide synthesizing method, we synthesized Kalata B2 cyclotide and the final product was purified by preparative HPLC. The sequence of Kalata B2 is GLPVCGETCFGGTCNTPGCSCTWPICTRD and its m/z M + H mass is 2955.53. It had been first isolated from <em>Oldenlandia affinis </em>plant leaves extract which belongs to Rubiaceae family. The synthesis of Kalata B2 has been characterized through UPLC/MS, LC/MS, CD, 1HNMR, and IR.展开更多
The focus of this paper is to present performance indices for unbalance radial feeder having different characteristic and composition of time varying static ZIP load models. These provide a framework for benchmarking ...The focus of this paper is to present performance indices for unbalance radial feeder having different characteristic and composition of time varying static ZIP load models. These provide a framework for benchmarking of distribution automation projects. 15 minutes characteristics time interval for load flow and load modeling are considered to meet smart grid implementation criterion. A forward-backward sweep method is employed for load flow solution. Developed performance indices were illustrated on modified IEEE 37 node test feeder. Performance indices are useful for analysis, operational, planning and integration of stochastic renewable sources.展开更多
When medium itself has become message and gets disproportionate importance, the substance of the message gets pushed back. Influence of visual media on culture and people has been increasing day by day. Though it infl...When medium itself has become message and gets disproportionate importance, the substance of the message gets pushed back. Influence of visual media on culture and people has been increasing day by day. Though it influences people both positively and negatively, it affects more adversely than otherwise as the media has begun affecting the very identity of the masses and reduced them to passive subjects. The plurality of culture and identity of people in the third world countries are at stake. Strong resistance of the masses supported by a new order of international information is the need of the hour. Keeping this in mind, a revisit to the influence of visual media is deliberated here.展开更多
This paper presents a compact microstrip patch antenna at operating frequency of 2.5 GHz. The radiating element of the proposed antenna consists of Swastika symbol patch using dielectric substrate 4.2, loss tangent 0....This paper presents a compact microstrip patch antenna at operating frequency of 2.5 GHz. The radiating element of the proposed antenna consists of Swastika symbol patch using dielectric substrate 4.2, loss tangent 0.0012 and having the same substrate height 1.6 mm. The antenna size is very compact (28.8 mm × 37.2 mm × 1.6 mm) and covers 1.696 GHz to 2.646 GHz and can be used for GSM and WLAN applications. Using IE3D software package of Zealand, the designed antenna is simulated. The computer simulation results show that the antenna can realize wideband characteristics having good impedance bandwidth of 43.758% (VSWR ≤ 2) for all resonant frequencies. Our aim is to reduce the size of the antenna as well as increase the impedance bandwidth.展开更多
文摘The advent of civilization has made humans dependent on plants for food and medicine,leading to the intensification of agricultural production.The intense cultivation of crops has resulted in the depletion of available nutrients from soil,thereby demanding the application of excess nutrients to soil to improve yield.Thus,mineral fertilizer discovery and application have,in many ways,contributed greatly to meeting global food demands.However,aside from the positive effects of mineral fertilizers,their excessive application to soil produces large amounts of pollutants that affect environmental sustainability.This necessitates the study of the major mineral fertilizer elements(nitrogen(N),phosphorus(P),and potassium(K)),the forms in which they are applied to soil,and their chemistry/reactions in soil.Here,we reviewed the forms of different N,P,and K mineral fertilizers to provide current knowledge on their constituents,the chemistry of N,P,and K in soil to understand the reactions they undertake in soil,the efficient methods of fertilizer application for environmental sustainability,the effects of mineral fertilizer loss to the environment,and improved fertilization technologies for environmental sustainability.Nanofertilizers are a promising technology for sustainable agricultural production and are discussed in detail in this review.
文摘<span style="font-family:Verdana;">The new coronavirus called SARS-CoV-2 is a new type of virus named as COVID-19. Although, </span><span style="font-family:Verdana;">it has </span><span style="font-family:Verdana;">few similarities with pandemic flu viruses</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the respiratory system and immune system are damaged through the viruses infected the population wh</span><span style="font-family:Verdana;">o</span><span style="font-family:Verdana;"> has weakened immunity. SARS-CoV-2 spread</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> when people don’t have the sign and symptoms. This virus COVID-19 appears to spread more easily than the flu, and asymptomatic transmission may account for a greater proportion of COVID-19’s spreader over the World. In inundation of the current understanding</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the roles of insect vectors are helping in the transmission of viral pathogens as well and the possible roles of some newly joined insects in the mechanical transmission of COVID-19.</span><span style="font-family:Verdana;"> We also specifically provide the prevention and control methods related to contamination, disease burden, risk pattern in the family, near and dear to maintain the precision of social distancing and development of the immune system to fight against SARS-CoV-2.
文摘Synthesis of a natural glycine-rich heptacyclopeptide mahafacyclin A （7） was accomplished by solution-phase technique of peptide synthesis via coupling of tetrapeptide unit Boc-L-Thr-L-Ile-L-Leu-Gly-OH with tripeptide unit L-Val-L-Phe-Gly-OMe followed by cyclization of linear heptapeptide fragment. Structure of the newly synthesized cyclopolypeptide was confirmed by means of chemical, spectroscopic analyses and subjected to antibacterial, antifungal and anthelmintic activity studies. Bioactivity results showed potent antifungal and anthelmintic activities of the synthesized peptide against dermatophytes T. mentagrophytes, M. audouinii and earthworm species M. kon-kanensis, P. corethruses and E. eugeniea.
文摘For the polynomial <em>P</em> (<em>z</em>) = <img src="Edit_94d094e0-dc15-4e21-b6cf-3fcb179d54b0.bmp" alt="" /><em>a<sub>j</sub>z<sup>j</sup></em>, <em>a</em><sub><em>j </em></sub>≥ <em>a</em><sub><em>j</em>-1</sub>, <em>a</em><sub>0</sub> > 0, <em>j</em> = 1, 2, …, <em>n</em>, <em>a<sub>n</sub></em> > 0, a classical result of Enestr<span style="white-space:nowrap;"><span style="white-space:nowrap;">ö</span></span>m-Kakeya says that all the zeros of <em>P</em> (<em>z</em>) lie in |<em>z</em>|≤ 1. This result was generalised by A. Joyall and G. Labelle, where they relaxed the non-negativity condition on coefficients. It was further generalized by M.A Shah by relaxing the monotonicity of some coefficients. In this paper, we use some known techniques and provide some more generalizations of the above results by giving more relaxation to the conditions.
文摘With the help of the solid phase peptide synthesizing method, we synthesized Kalata B2 cyclotide and the final product was purified by preparative HPLC. The sequence of Kalata B2 is GLPVCGETCFGGTCNTPGCSCTWPICTRD and its m/z M + H mass is 2955.53. It had been first isolated from <em>Oldenlandia affinis </em>plant leaves extract which belongs to Rubiaceae family. The synthesis of Kalata B2 has been characterized through UPLC/MS, LC/MS, CD, 1HNMR, and IR.
文摘The focus of this paper is to present performance indices for unbalance radial feeder having different characteristic and composition of time varying static ZIP load models. These provide a framework for benchmarking of distribution automation projects. 15 minutes characteristics time interval for load flow and load modeling are considered to meet smart grid implementation criterion. A forward-backward sweep method is employed for load flow solution. Developed performance indices were illustrated on modified IEEE 37 node test feeder. Performance indices are useful for analysis, operational, planning and integration of stochastic renewable sources.
文摘When medium itself has become message and gets disproportionate importance, the substance of the message gets pushed back. Influence of visual media on culture and people has been increasing day by day. Though it influences people both positively and negatively, it affects more adversely than otherwise as the media has begun affecting the very identity of the masses and reduced them to passive subjects. The plurality of culture and identity of people in the third world countries are at stake. Strong resistance of the masses supported by a new order of international information is the need of the hour. Keeping this in mind, a revisit to the influence of visual media is deliberated here.
文摘This paper presents a compact microstrip patch antenna at operating frequency of 2.5 GHz. The radiating element of the proposed antenna consists of Swastika symbol patch using dielectric substrate 4.2, loss tangent 0.0012 and having the same substrate height 1.6 mm. The antenna size is very compact (28.8 mm × 37.2 mm × 1.6 mm) and covers 1.696 GHz to 2.646 GHz and can be used for GSM and WLAN applications. Using IE3D software package of Zealand, the designed antenna is simulated. The computer simulation results show that the antenna can realize wideband characteristics having good impedance bandwidth of 43.758% (VSWR ≤ 2) for all resonant frequencies. Our aim is to reduce the size of the antenna as well as increase the impedance bandwidth.
