Evaluation of a multimode fiber optic low coherence interferometer for path length resolved Doppler measurements of diffuse light \ud

The performance of a graded index multimode fiber optic low coherence Mach-Zehnder interferometer with phase modulation is analyzed. Investigated aspects were its ability to measure path length distributions and to perform path length resolved Doppler measurements of multiple scattered photons in a turbid suspension of particles undergoing Brownian and translational motion. The path length resolution of this instrument is compared with a system using single mode fibers for illumination and detection. The optical path lengths are determined from the zero order moment of the phase modulation peak in the power spectrum. The weighted first moment, which is equal to the average Doppler shift, shows a linear response for different mean flow velocities within the physiological rang

Evolution of electromagnetic and Dirac perturbations around a black hole in Horava gravity

The evolution of electromagnetic and Dirac perturbations in the spacetime geometry of Kehagias-Sfetsos(KS) black hole in the deformed Horava-Lifshitz(HL) gravity is investigated and the associated quasinormal modes are evaluated using time domain integration and WKB methods. We find a considerable deviation in the nature of field evolution in HL theory from that in the Schwarzschild spacetime and QNMs region extends over a longer time in HL theory before the power-law tail decay begins. The dependence of the field evolution on the HL parameter $\alpha$ are studied. In the time domain picture we find that the length of QNM region increases with $\alpha$. But the late time decay of field follows the same power-law tail behavior as in the case of Schwarzschild black hole.Comment: The article was fully rewritten, references added, to appear in MPL

Programming Protocol-Independent Packet Processors

P4 is a high-level language for programming protocol-independent packet processors. P4 works in conjunction with SDN control protocols like OpenFlow. In its current form, OpenFlow explicitly specifies protocol headers on which it operates. This set has grown from 12 to 41 fields in a few years, increasing the complexity of the specification while still not providing the flexibility to add new headers. In this paper we propose P4 as a strawman proposal for how OpenFlow should evolve in the future. We have three goals: (1) Reconfigurability in the field: Programmers should be able to change the way switches process packets once they are deployed. (2) Protocol independence: Switches should not be tied to any specific network protocols. (3) Target independence: Programmers should be able to describe packet-processing functionality independently of the specifics of the underlying hardware. As an example, we describe how to use P4 to configure a switch to add a new hierarchical label

Preliminary report on a reconnaissance survey of the major coastal and marine ecosystems in Gulf of Kutch

The region of Gulf of Kutch was possibly more an arid zone in the pleistocene, almost approaching to a desert condition, than what it is at present. The gulf is believed to be the result of a wide indentation or subsidence that allowed encroachment of the sea in the geological past. The whole area is still supposed to be seismically unstable. The Gulf of Kutch covers an area of circa 7,350 sq. km with a maximum depth of 60 m. The tidal range varies from 3.06 to 5.89 m with an average of 4 m. The intertidal zones are sandy and muddy or with sandstones of vast expanse and prolonged exposure

Culture of live feed organisms

In any maricuUure practice, availability of seed is one of the prime requisites for sustaining growth, development and to make the activity viable ecologically and economically. As the natural source of seed is often beset with environmental / conservational problems, the dependable source is production through hatchery techniques. Uninterrupted production and supply of live feeds alone can sustain hatchery operations and to feed the emerging larvae or post larvae with different feed requirements at different stages of development / growth. Technologies developed by CMFRl in this line are given in this paper. The method of culturing important live feed organisms such as micro-algae, rotifers, cladocerans and Artemia salina along with their harvesting and preservation are briefly described in this accoun

Role of probiotics in prevention of necrotizing enterocolitis in preterm neonates

Background: Necrotizing enterocolitis (NEC) is one of the common emergencies in preterm neonates which are associated with high morbidity and mortality despite recent advances in neonatal care. Probiotics may be one of the most effective therapies for the prevention of NEC. Objective: The objective of this study is to evaluate the role of probiotics in reducing the incidence of NEC in preterm newborns. Methods: This was a prospective randomized control study conducted at tertiary care teaching hospital. A total of 140 preterm newborns of gestation ≤34 weeks of age were enroled in the final analysis. The recruited newborns were randomized into intervention group and control group by simple random sampling method. The intervention group was fed probiotics mixed with expressed breast milk, and the control group was fed with milk alone. Result: The incidence of NEC in probiotics group was significantly lower than in the control group (2.86% vs. 11.43%), (p=0.04). Although there were no significant differences in the initial presentation of NEC between the two groups, those in the study group who developed NEC had less severe disease, based on Bell’s staging criteria. There was no significant difference in terms of age in diagnosis of NEC and in age at which birth weight is gained between the two groups. However, there was a statistically significant difference in duration of hospital stay (15.62±2.84 vs. 23.54±3.43 days; p<0.001) and time to reach full feed (15.82±3.15 vs. 20.22±2.14; p<0.001). There was no significant difference in incidence of overall mortality (p=0.209; relative risk [RR] 0.25, 95% confidence interval [CI]: 0.029–2.18) and sepsis rate (p=0.673; RR 1.15, 95% CI: 0.593–2.243) between the two groups. Conclusion: Probiotics supplementation reduced the incidence and severity of NEC in the preterm neonates. This resulted in shorter duration of hospital stay and faster achievement of full oral feeds

Physical Model Study of Inclined Twin Plate Submerged Breakwater

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Preliminary report on a reconnaissance survey of the major coastal and marine ecosystems in Gulf of Kutch

The region of Gulf of Kutch was possibly more an arid zone in the pleistocene, almost approaching to a desert condition, than what it is at present. The Gulf of Kutch covers an area of circa 7,350 sq. km with a maximum depth of 60 m. The tidal range varies from 3.06 to 5.89 m with an average of 4 m. The intertidal zones are sandy and muddy or with sandstones of vast expanse and prolonged exposure. The present report is based on a six weeks survey carried out in the Gulf of Kutch mainly around Okha and Jamnagar in 1978 with a view to obtaining additional information on the major marine and coastal habitats, particularly the coral formations and the mangroves. The prevailing physical features,animal communities and the visible ecological impact on the ecosystems due to human interference are briefly discussed. The most important physical factor that at present aifect the marine life of Gulf of Kutch seems to be the high degree of sedimentation. Existence of extreme physical conditions such as prolonged exposure due to very high tidal amplitude is a major factor that applies constraints on the colonization of many marine animals. The higher rate of sedimentation in the inshore waters of Gulf of Kutch appears to be the most deleterious physical factor that affect the marine fauna at present

Childhood cancer in the south Asian population of England (1990–1992)

Cancer incidence in 1990–92 among English south Asian (residents with ethnic origins in India, Pakistan or Bangladesh) and non-south Asian children is compared. Standardized incidence ratios show significant overall excesses in south Asians (131), largely due to higher rates in south Asian boys, and specific excesses for leukaemia (141), lymphoid leukaemia (141), lymphoma (172) and hepatic tumours (375). Aetiological investigation is required. © 2001 Cancer Research Campaign http://www.bjcancer.co