357 research outputs found
Energy as the basis of harvest index
Harvest index has become a character used in plant breeding programmes and in evaluation of responses to agronomic treatments. Donald defined harvest index as the ratio between weight of grains and the weight of total dry matter, and later described it as a measure of partitioning of photo-synthates (Donald, 1968)
Higher signal harmonics, LISA's angular resolution, and dark energy
It is generally believed that the angular resolution of the Laser
Interferometer Space Antenna (LISA) for binary supermassive black holes (SMBH)
will not be good enough to identify the host galaxy or galaxy cluster. This
conclusion, based on using only the dominant harmonic of the binary SMBH
signal, changes substantially when higher signal harmonics are included in
assessing the parameter estimation problem. We show that in a subset of the
source parameter space the angular resolution increases by more than a factor
of 10, thereby making it possible for LISA to identify the host galaxy/galaxy
cluster. Thus, LISA's observation of certain binary SMBH coalescence events
could constrain the dark energy equation of state to within a few percent,
comparable to the level expected from other dark energy missions.Comment: 15 pages, no figures. Final version to appear in Phys. Rev.
Bilateral phyllodes tumor of the breast in a young nulliparous woman
Cystosarcoma phyllodes is a rare breast tumor with incidence of 1% of all the mammary tumors. Bilateral occurrence is very rare. Median age of presentation is 40-50 years. We present a case of 24 years old nulliparous female with phyllodes tumour developing in both the breasts one after another with a gap of five years. Patient underwent simple mastectomy on both sides. Histopathology report confirmed benign variety of cystosarcoma phyllodes on both sides
Predictive Modeling of Microemulsion Phase Behaviour and Microstructure Characterisation in the 1-Phase Region
A PROCESS FOR THE PREPARATION OF PHARMACOLOGICALLY ACTIVE ά-ASARONE FROM TOXIC β-ASARONE RICH ACORUS CALAMUS OIL"
The present invention relates to a process for the preparation of high purity and yield aasarone,
trans 2,4,5-trimethoxy cinnamaldehyde, 2,4,5-trimethoxy-phenyl propionone, from
p-asarone or P-asarone rich Acorus calamus oil containing a and y-asarone by
hydrogenating, followed by treatment with DDQ with or without solid support of silica gel or
alumina in dry organic solvent and a-asarone can also be obtained by treating the
hydrogenated product of P-asarone or P-asarone rich Acorus calamus with DDQ in an
aqueous organic solvent to obtain an intermediate 2,4,5-trimethoxy phenyl propionone,
which in turn is reduced with sodiumborohydride to obtain the corresponding 2,4,5-
trimethoxy-phenyl propanol and followed by final treatment with a dehydrating agen
A process for the preparation of nolignan 3- ethyl-2-methyl-3- (2",4",5"-trimethoxy) phenyl-1-(2',4',5'-trimethoxy) phenyl-1-propene
The present invention relates to a novel neolignan (Neolasa-I) 3-ethyl-2-methyl-3-(2", 4", 5"-
trimethoxy-phenyl-1-(2' ,4' ,5'-trimethoxy)Phenyl-(2' ,4',5'-Trimethoxy)phenyl-1- propene and
a process for the preparation of high purity, higher yield neolignan, a-asarone, 2,4,5-
trimethoxy-phenylpropionone from B-asarone or B-asarone rich acorus calamus oil
containing a and Y-asarone by hydrogenating and dimerizing by treatment with DDQ in
presence of an organic acid
Third post-Newtonian angular momentum flux and the secular evolution of orbital elements for inspiralling compact binaries in quasi-elliptical orbits
The angular momentum flux from an inspiralling binary system of compact
objects moving in quasi-elliptical orbits is computed at the third
post-Newtonian (3PN) order using the multipolar post-Minkowskian wave
generation formalism. The 3PN angular momentum flux involves the instantaneous,
tail, and tail-of-tails contributions as for the 3PN energy flux, and in
addition a contribution due to non-linear memory. We average the angular
momentum flux over the binary's orbit using the 3PN quasi-Keplerian
representation of elliptical orbits. The averaged angular momentum flux
provides the final input needed for gravitational wave phasing of binaries
moving in quasi-elliptical orbits. We obtain the evolution of orbital elements
under 3PN gravitational radiation reaction in the quasi-elliptic case. For
small eccentricities, we give simpler limiting expressions relevant for phasing
up to order . This work is important for the construction of templates for
quasi-eccentric binaries, and for the comparison of post-Newtonian results with
the numerical relativity simulations of the plunge and merger of eccentric
binaries.Comment: 62 pages, 18 figures, matches with the published versio
Analysis of time-domain indices, frequency domain measures of heart rate variability derived from ECG waveform and pulse-wave-related HRV among overweight individuals: an observational study [version 1; peer review: 2 approved]
Background: Research on the compatibility of time domain indices, frequency domain measurements of heart rate variability obtained from electrocardiogram (ECG) waveforms, and pulse wave signal (pulse rate variability; PRV) features is ongoing. The promising marker of cardiac autonomic function is heart rate variability. Recent research has looked at various other physiological markers, leading to the emergence of pulse rate variability. The pulse wave signal can be studied for variations to understand better changes in arterial stiffness and compliance, which are key indicators of cardiovascular health. Methods: 35 healthy overweight people were included. The Lead II electrocardiogram (ECG) signal was transmitted through an analog-to-digital converter (PowerLab 8/35 software, AD Instruments Pty. Ltd., New South Wales, Australia). This signal was utilized to compute Heart Rate Variability (HRV) and was sampled at a rate of 1024 Hz. The same AD equipment was also used to capture a pulse signal simultaneously. The right index finger was used as the recording site for the pulse signal using photoplethysmography (PPG) technology. Results: The participants' demographic data show that the mean age was 23.14 + 5.27 years, the mean weight was 73.68 + 7.40 kg, the mean body fat percentage was 32.23 + 5.30, and the mean visceral fat percentage was 4.60 + 2.0. The findings revealed no noticeable difference between the median values of heart rate variability (HRV) and PRV. Additionally, a strong correlation was observed between HRV and PRV. However, poor agreement was observed in the measurement of PRV and HRV. Conclusion: All indices of HRV showed a greater correlation with PRV. However, the level of agreement between HRV and PRV measurement was poor. Hence, HRV cannot be replaced with PRV and vice-versa
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