13,810 research outputs found
Hawking radiation from dynamical horizons
In completely local settings, we establish that a dynamically evolving black
hole horizon can be assigned a Hawking temperature. Moreover, we calculate the
Hawking flux and show that the radius of the horizon shrinks.Comment: 5 Page
New Records of Thecacineta cothurnioides and Trematosoma rotunda (Ciliophora, Suctorea) as epibionts on nematodes from the Indian Ocean
This article deals with the report of two suctorian ciliates species viz. Thecacineta
cothurnioides Collin, 1909 and Trematosoma rotunda (Allgén, 1952 ) as epibionts
on Tricoma sp. and Pseudochromadora sp. (Nematoda) respectively from Ratnagiri,
west coast of India, Arabian Sea (Indian Ocean). Redescription of two species with
distribution and nomenclatural notes are given. Both species are recorded here first
time from Indian coast and the Indian Ocean. Genus Tricoma Cobb, 1894 is also
recorded here first time as a host of Th. cothurnioides
An overview of Suctorian ciliates (Ciliophora, Suctorea) as epibionts of halacarid mites (Acari, Halacaridae)
Scant information is available regarding the prevalence and distribution of suctorian ciliates on halacarid mites. However,
using this limited information and data from our laboratory on the systematics, biology, ecology and distribution of
suctorian ciliates that are epibionts of halacarid mites, we redescribed four suctorian species: Limnoricus ceter (Jankowski),
Praethecacineta halacari (Schulz), Thecacineta calix (Schroder) and Acineta sulcata Dons. We also recognized
Lissacineta allgeni Jankowski and Thecacineta allgeni (Jankowski) as synonyms of Praethecacineta halacari (Schluz),
and Thecacineta laophontis Jankowski and Paracineta moebiusi Kahl as synonyms of Thecacineta calix (Schroder).
Many suctorians have been reported, but not properly identified in the halacarid literature. So, we have attempted to
identify those suctorians to species level. Lastly, the interactions between the suctorians and their hosts are also discussed
and Praethecacineta halacari is also reported for the first time from the Indian coast
Report of epibiont Thecacineta calix (Ciliophora: Suctorea) on deep sea Desmodora (Nematoda) from the Andaman Sea, Indian Ocean
Suctorian epibionts Thecacineta calix attached on the cuticle of nematodes Desmodora sphaerica and
D. pontica are reported here from the deep sea hexactinellid sponge Pheronema sp. from the Andaman
Sea (Indian Ocean). The epibiont T. calix is reported here for first time from the Andaman Sea
USING TRANSFORMATIVE LEARNING THEORY TO EXPLORE ADJUNCT FACULTY\u27S EXPERIENCES WITH TEACHING INFORMATION LITERACY: A CASE STUDY OF COMMUNITY COLLEGES IN NEW JERSEY
The purpose of this qualitative case study was to explore how adjunct faculty experienced transformative learning as a result of their efforts to teach information literacy for their classes at community colleges in New Jersey. Information literacy was defined as the ability to identify information needs and the skills to discover, evaluate, and use information effectively (Townsend et. al., 2016). The study resulted in descriptions of how adjunct faculty transformed their teaching practices when necessary to adapt to new information environments. A qualitative descriptive case study methodology was chosen to examine the occurrence of this phenomenon (Yin, 2014). For the purposes of this research, the units of analysis were adjunct faculty, who have taught at community colleges in New Jersey for at least two semesters. The setting for the study was the network of the 18 community colleges in New Jersey with more than 60 campuses, serving 21 counties (NJCCC, 2019)
Accelerating Universe as Window for Extra Dimensions
Homogeneous cosmological solutions are obtained in five dimensional space
time assuming equations of state and where p
is the isotropic 3 - pressure and , that for the fifth dimension. Using
different values for the constants k and many known solutions are
rediscovered. Further the current acceleration of the universe has led us to
investigate higher dimensional gravity theory, which is able to explain
acceleration from a theoretical view point without the need of introducing dark
energy by hand. We argue that the terms containing higher dimensional metric
coefficients produce an extra negative pressure that apparently drives an
acceleration of the 3D space, tempting us to suggest that the accelerating
universe seems to act as a window to the existence of extra spatial dimensions.
Interestingly the 5D matter field remains regular while the \emph{effective}
negative pressure is responsible for the inflation. Relaxing the assumptions of
two equations of state we also present a class of solutions which provide early
deceleration followed by a late acceleration in a unified manner. Interesting
to point out that in this case our cosmology apparently mimics the well known
quintessence scenario fuelled by a generalised Chaplygin-type of fluid where a
smooth transition from a dust dominated model to a de Sitter like one takes
place.Comment: 20 pages,3 figure
Microbiological examination of milk in Tarakeswar, India with special reference to coliforms
A study was carried out to assess the milk quality in Tarakeswar, India with special reference to coliforms. By standard plate count (SPC) method, out of ten raw milk samples, the microbial colonies were found to be high in six samples and the colony content was low in rest four samples. Inpasteurized milk samples, the colonies were low in seven samples and high in three samples. The methylene blue test performed for raw milk samples showed that out of ten samples, the five samples were poor, two samples were fair, two samples were good and only one sample was found to be anexcellent. Out of ten pasteurized samples, nine samples were of good quality and one was found to be excellent. Bacterial colony was found to be opaque and metallic sheen in colour prepared from five raw milk samples, and by biochemical characterization it was identified as Escherichia col
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