28 research outputs found
HPLC QUANTIFICATION OF LACTOPEROXIDASE IN THERAPEUTIC DAIRY WASTE ENRICHED BY BUBBLESEPARATION
Objective: The objective of this study was to enrich therapeutic proteins and remove pollutants from dairy wastewater for establishing foam fractionation as a lucrative unit operation.
Methods: Dairy wastewater collected from dairy industry was processed to fat-free dried protein waste mass diluted to 1-liter feed by distilled water in different concentrations and foam fractionated by sodium dodecyl sulphate (surfactant) to enriched proteins extract (foamate) in a foam fractionator. Foamate were analysed to quantify total proteins and lacto peroxidase respectively. The efficiency was evaluated by varying parameters like pH, initial waste and ionic concentrations, the waste-surfactant mass ratio of feed and flow rate of gas (N2) through feed solution by several experiments. Heat of desorption (λ) and mass transfer coefficient (K) were determined as indicators of adsorptive bubble separation to foam phase governed by Gibb’s equation of adsorption isotherm.
Results: The process was optimized at pH 5.5, initial feed concentration 500μg/ml, waste–surfactant mass ratio (1.5:1), gas flow rate (350 ml/min) and ionic concentration 0.1 gram-mole of NaCL per litre of feed with enrichment factor (49.09), percent recovery (98.18%) observed in foamate. One natural preservative specifically lactoperoxidase was quantified by RP-HPLC analysis as 0.49% (w/w) of total proteins at optimal condition. Heat of desorption(λ), mass transfer coefficient(K)were determined 3140cal/mol and 12.68* 10-9 mol/cal/cm2/s respectively at pH 8.5, initial feed concentration 500μg/ml and gas flow rate 350 ml/min.
Conclusion: The method may be a useful unit operation for recovery of biomolecules and removal of toxic pollutants from industrial wastewater for coming days
Nature of singularity formed by the gravitational collapse in Husain space-time with electromagnetic field and scalar field
In this work, we have investigated the outcome of gravitational collapse in
Husain space-time in the presence of electro-magnetic and a scalar field with
potential. In order to study the nature of the singularity, global behavior of
radial null geodesics have been taken into account. The nature of singularities
formed has been thoroughly studied for all possible variations of the
parameters. These choices of parameters has been presented in tabular form in
various dimensions. It is seen that irrespective of whatever values of the
parameters chosen, the collapse always results in a naked singularity in all
dimensions. There is less possibility of formation of a black hole. Hence this
work is a significant counterexample of the cosmic censorship hypothesis.Comment: 9 pages, 19 figure
Passive Transdermal Systems Whitepaper Incorporating Current Chemistry, Manufacturing and Controls (CMC) Development Principles
In this whitepaper, the Manufacturing Technical Committee (MTC) of the Product Quality Research Institute has updated the 1997 Transdermal Drug Delivery Systems Scale-Up and Post Approval Change workshop report findings to add important new product development and control principles. Important topics reviewed include ICH harmonization, quality by design, process analytical technologies, product and process validation, improvements to control of critical excipients, and discussion of Food and Drug Administration’s Guidance on Residual Drug in Transdermal and Related Drug Delivery Systems as well as current thinking and trends on in vitro–in vivo correlation considerations for transdermal systems
Gastric adenocarcinoma in a patient re-infected with H. pylori after regression of MALT lymphoma with successful anti-H. pylori therapy and gastric resection: a case report
BACKGROUND: Helicobacter pylori (H. pylori) has been etiologically linked with primary gastric lymphoma (PGL) and gastric carcinoma (GC). There are a few reports of occurrence of both diseases in the same patient with H. pylori infection. CASE PRESENTATION: We report a patient with PGL in whom the tumor regressed after surgical resection combined with eradication of H. pylori infection. However, he developed GC on follow up; this was temporally associated with recrudescence / re-infection of H. pylori. This is perhaps first report of such occurrence. CONCLUSIONS: Possible cause and effect relationship between H. pylori infection and both PGL and GC is discussed. This case also documents a unique problem in management of PGL in tropical countries where re-infection with H. pylori is supposed to be high
An Efficient Algorithm to Compute a Steiner Set and Steiner Tree on Trapezoid Graphs
[[abstract]]This paper presents an ecient algorithm to compute a minimum
cardinality Steiner set and Steiner tree on trapezoid graphs. The algo-
rithm takes O(m+n
p
log C) time for a trapezoid graph with n vertices
and m edges, where cost of each arc is a non-negative integer number
bounded by C
Sun as a cosmic ray TeVatron
Very recently, HAWC observatory discovered the high-energy gamma ray emission
from the solar disk during the quiescent stage of the Sun, extending the
Fermi-LAT detection of intense, hard emission between 0.1 - 200 GeV to TeV
energies. The flux of these observed gamma-rays is significantly higher than
that theoretically expected from hadronic interactions of galactic cosmic rays
with the solar atmosphere. More importantly, spectral slope of Fermi and HAWC
observed gamma ray energy spectra differ significantly from that of galactic
cosmic rays casting doubt on the prevailing galactic cosmic ray ancestry model
of solar disk gamma rays. In this work, we argue that the quiet Sun can
accelerate cosmic rays to TeV energies with an appropriate flux level in the
solar chromosphere, as the solar chromosphere in its quiet state probably
possesses the required characteristics to accelerate cosmic rays to TeV
energies. Consequently, the mystery of the origin of observed gamma rays from
the solar disk can be resolved consistently through the hadronic interaction of
these cosmic rays with solar matter above the photosphere in a quiet state. The
upcoming IceCube-Gen2 detector should be able to validate the proposed model in
future through observation of TeV muon neutrino flux from the solar disk. The
proposed idea should have major implications on the origin of galactic cosmic
rays.Comment: 12 pages, 4 figure
Osteosarcoma of the mandible - second cancer in a case of Hodgkin's lymphoma post-chemotherapy
Osteosarcoma as a second cancer occurring in an adolescent male
previously treated with only chemotherapy for Hodgkin\u2032s lymphoma
is rare. A 14 year old male presented with gradual swelling of right
jaw and numbness of lip and chin for last three months. He was treated
with only chemotherapy for Hodgkin\u2032s lymphoma four years back.
Incisional biopsy was taken from mandibular swelling, histopathology
suggesting osteosarcoma. Right hemimandibulectomy and reconstruction
with metallic implant were done along with excision of right parotid
lymph node. Chemotherapy was started with cisplatin and doxorubicin
regimen. Absence of radiation as a risk factor and very young age of
the patient presenting with a second cancer made this case a rarity and
hence the case is being reported
Osteosarcoma of the mandible - second cancer in a case of Hodgkin's lymphoma post-chemotherapy
Osteosarcoma as a second cancer occurring in an adolescent male
previously treated with only chemotherapy for Hodgkin′s lymphoma
is rare. A 14 year old male presented with gradual swelling of right
jaw and numbness of lip and chin for last three months. He was treated
with only chemotherapy for Hodgkin′s lymphoma four years back.
Incisional biopsy was taken from mandibular swelling, histopathology
suggesting osteosarcoma. Right hemimandibulectomy and reconstruction
with metallic implant were done along with excision of right parotid
lymph node. Chemotherapy was started with cisplatin and doxorubicin
regimen. Absence of radiation as a risk factor and very young age of
the patient presenting with a second cancer made this case a rarity and
hence the case is being reported