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Freshwater Bryozoa

Freshwater Bryozoa

Satish Mokashe; Ananta Harkal

LAP Lambert Academic Publishing
2019
pokkari
A book about freshwater bryozoa? First, because these are commonly found but forgotten beauties of freshwater ecosystem like natural lakes, rivers, ponds as well as all man-made reservoirs. They are very easy to find, lovely to watch and highly interesting to study. They are very frequently or most of the time ignored. They are good indicators of water quality. They are filter feeders and purify water 24X7. They are huge nuisance to municipality and farmers as they choke up pipelines. They hold back huge amount of secrets about multi cellular organization. They are found on almost all types of substrata. They are having a unique relationship with sponge.
Study of root rot diseases of chickpea and its management

Study of root rot diseases of chickpea and its management

Satish Tambe

LAP Lambert Academic Publishing
2019
pokkari
Chickpea (Cicer arietium L.) locally known as gram or chana in an important pulse crop widely grown in the world and as well as in India. India is the largest producer of chickpea sharing 75 percent of the world production. Chickpea is known to have originated in Western Asia and belong to the family leguminaceae and is an ancient crop cultivated in about 40 countries of the world. Chickpea is affected by number of diseases viz, Fusarium wilt (Fusarium oxysporum, Fusarium cicer); Dry rot and Wet root rot (Macrophomina phaseolina (Tassi) Goid); Collar rot (Sclerotium rolfsii Sacc) and Foot rot (Sclerotinia sclerotium . In the present work attempts are made to dicover potential fungitoxic plant against resistant isolates of Macrophomina phaseolina, Fusarium oxysporum and Sclerotium rolfsii.
Phase Locked LOOP

Phase Locked LOOP

Satish Kumar Gupta

LAP Lambert Academic Publishing
2020
pokkari
The phase locked loop is most commonly used circuit in modern communication system. The concept of PLL was first developed in 1930. Since then it is used to generate, modulate, stabilized, demodulate and to recover a signal from noise in communication system. PLL is widely used in radio frequency synthesis.The phase noise and jitter effects the different building blocks of PLLs which causes instability to the system. The noise performance of the PLL outside the loop is totally depends on voltage controlled oscillator performance. The VCO is an Oscillator which contributes small random perturbation in the phase of the signal. In PLL, the bandwidth of the loop filter is an important factor in controlling the capture range as well as in reducing the noise.In PLL it is most challenging task to design a LF which remain stable and do not produce unwanted high frequency spurious oscillations.