Aggregative Mating of Tanner Crabs, Chionoecetes bairdi

1994 ◽  
Vol 51 (6) ◽  
pp. 1273-1280 ◽  
Author(s):  
Bradley G. Stevens ◽  
Jan A. Haaga ◽  
William E. Donaldson
Keyword(s):  
Sediment Surface ◽  
Body Parts ◽  
Many Body ◽  
Nocturnal Activity ◽  
Major Mode ◽  
The Family ◽  
Chionoecetes Bairdi ◽  
Male To Female ◽  
Mating Aggregation ◽  
Multiparous Female

In April 1991, a high-density mating aggregation of Tanner crabs, Chionoecetes bairdi, was discovered at 150 m depth near Kodiak, Alaska, with the research submersible DSRV Delta. The aggregation consisted primarily of oldshell, multiparous female crabs which formed mounds 1–2 m in diameter, 0.5–1.0 m high, and spaced at intervals of 1–2 m. Mounds contained hundreds of crabs each at densities > 100∙m−2. Male crabs were found mating with females at the periphery of the aggregation, with sex ratios (male to female) varying from 1:10 to 1:100. The entire aggregation covered an area of about 2.2 ha and included approximately 100 000 crabs. No mounds were observed in May 1992, but recently spawned female crabs were found buried in the sediment at high densities (up to 2.2∙m−2) over an area of about 25 ha, suggesting that aggregation had reoccurred at the same location. Newly ovigerous females exhibited a cycle of nocturnal activity and diurnal burial whereas unmated crabs remained exposed on the sediment surface. Many body parts and presumably dead crabs were observed. We conclude that aggregative mating is a major mode of reproduction in the family Majidae.

scholarly journals Pollen load and distribution on the body of Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) within oil palm plantations

2020 ◽  
Vol 17 (2) ◽  
pp. 81
Author(s):  
Van Basten Tambunan ◽  
Bandung Sahari ◽  
Damayanti Buchori ◽  
Purnama Hidayat
Keyword(s):  
Oil Palm ◽  
The Body ◽  
Body Parts ◽  
Pollen Load ◽  
Male And Female ◽  
Male Flowers ◽  
Pollen Distribution ◽  
Male To Female ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

<p>The African oil palm weevil,<strong> </strong><em>Elaeidobius kamerunicus</em> is an effective pollinator of oil palm. Each individual palm produces exclusively male or female inflorescence so that the success of pollination depends on the ability of the pollinator to transfer pollen from male to female flowers. The objective of this research was to study the amount of pollen carried by <em>E. kamerunicus</em> between male and female inflorescences (pollen load) and the amount of pollen carried on each part of the weevil’s body (pollen distribution). Fifty each of male and female  <em>E. kamerunicus</em> individuals were collected from male and female flowers on trees in 3 locations: Siantar (North Sumatra), Dramaga (West Java), and Morowali (Central Sulawesi). Data on pollen load and pollen distribution on the weevil’s body were analyzed using <em>ImageJ</em> software. Results show that <em>E. kamerunicus</em> individuals collected more pollen from male flowers than from female flowers. In addition, male insects carried more pollen on their bodies than female insects. Pollen distribution on weevil body parts was highest on the elytra, followed by the thorax, abdomen, legs, and head respectively.</p>

DOES SEX MATTER?

2002 ◽  
Vol 61 (1) ◽  
pp. 1-52
Author(s):  
Andrew Bainham
Keyword(s):  
Family Law ◽  
Biological Sex ◽  
Gender Reassignment Surgery ◽  
Gender Reassignment ◽  
The Family ◽  
Male To Female ◽  
Court Of Appeal

ARE sex or gender crucial components of modern marriage? In Bellinger v. Bellinger [2001] EWCA Civ 1140, [2001] 2 F.L.R. 1048, the Court of Appeal returned to the question of the relevance of biological sex to the validity of marriage, first considered thirty years ago by Ormrod J. in Corbett v. Corbett (otherwise Ashley) [1971] P. 83. Both cases involved male-to-female transsexuals who had undergone gender reassignment surgery but in Bellinger, Mrs. Bellinger sought a declaration under section 55 of the Family Law Act 1986 that her marriage to Mr. Bellinger was valid at its inception and still subsisting (unlike Corbett, which involved a nullity petition). The Court, by a majority, upheld the decision of Johnson J. refusing the declaration.

scholarly journals Ethnobotanic study of medicinal plants used in Oran, Algeria

2019 ◽  
Vol 48 (4) ◽  
pp. 1163-1173
Author(s):  
Hafsa Benaiche ◽  
Nadia Bouredja ◽  
Amel Alioua
Keyword(s):  
Medicinal Plants ◽  
Therapeutic Efficacy ◽  
Respiratory Diseases ◽  
Ethnobotanical Survey ◽  
Valuable Source ◽  
Major Mode ◽  
The Family ◽  
Digestive Disorders ◽  
Source Of Information

Using 500 survey cards, the ethnobotanical survey was conducted over a period of 4 months. From the survey 62 species belonging to 30 families were identified. The family Lamiaceae is the most dominant followed by Apiaceae. In addition, the leaves are the most used part (38%). Furthermore, the infusion was the major mode of preparation (66%). In terms of diseases treated, digestive disorders rank first (50%), followed by respiratory diseases (28%). The results obtained will be a valuable source of information for the region. There could be a database for further research in the fields of pharmacology and for the purpose of evaluating the therapeutic efficacy of medicinal plants.

Drug Abuse Deaths in Glasgow in 1992 — A Retrospective Study

1995 ◽  
Vol 35 (3) ◽  
pp. 207-212 ◽  
Author(s):  
Marie T Cassidy ◽  
Michael Curtis ◽  
Gillian Muir ◽  
John S Oliver
Keyword(s):  
Retrospective Study ◽  
Drug Abuse ◽  
Place Of Residence ◽  
Female Ratio ◽  
Drug Deaths ◽  
The Family ◽  
Family Home ◽  
Age Range ◽  
High Degree ◽  
Male To Female

A survey of 62 drug deaths in Glasgow showed a wider age range than expected (16–49), a high male to female ratio (44:18) and, where mode of employment had been recorded, a high degree of unemployment (91%). The majority of deaths occurred near centres of known supply. Although a number occurred in the family home, a large proportion were not at the place of residence. In only two cases was morphine detected alone. The majority of the deaths were from combinations of drugs, primarily with benzodiazepines.

scholarly journals Congenital Anomalies of The Ear in Newborns from Lviv Region (west Ukraine) for 2006-2018 YY.

2020 ◽  
Vol 2 (1) ◽  
pp. 01-05
Author(s):  
Kitsera Nataliya
Keyword(s):  
Birth Defects ◽  
Congenital Anomalies ◽  
Correct Diagnosis ◽  
Female Ratio ◽  
Family Doctors ◽  
Maternity Hospitals ◽  
The Family ◽  
The Village ◽  
The City ◽  
Male To Female

Objectives The ear’s congenital anomalies usually occur in the outer, middle or inner ear separately or in combination. We had determined the сongenital ear’s anomalies (CEA) in newborns (2006-2018 yy) in West Ukraine, Lviv region. Methods 14 newborns who were diagnosed according to the reporting form by the maternity hospitals with CEA were analyzed over a period of 13 years.Results During the study period (2006–2018), there were 366 147 births reported, and 8634 newborns with birth defects, 14 were with CEA, an average incidence of 0.4 per 10 000 births. Our study included 10 boys and 4 girls with CEA. Male-to-female ratio was 2.5:1. The number of newborns with ear pathology was 1.8 times higher in the city than in the village. The most common birth defects of the ear were Q16.1 congenital absence, atresia and stricture of auditory canal (external) – 4 (28.6%) and Q16.9 CEA causing impairment of hearing, unspecified – 4 (28.6%), especially the most common of right side. Microtia (Q17.2) was met very rarely -1 (7.1%) and other CEA Q16.9-1 (7.1%). During this period there were only 2 cases of anotia and 1 case of microtia. There was only 1 (7.1%) case of bilateral CEA in boy from town. Just one girl had CEA was associated with birth defect of musculoskeletal system. Conclusion This is necessary to establish the correct diagnosis in time, especially for mind of the family doctors, genetic counseling for relatives family for has benefited earlier prophylaxis.

Quantum spin chains and classical integrable systems

2018 ◽  
Author(s):  
Anton Zabrodin
Keyword(s):  
Integrable Systems ◽  
Quantum Spin ◽  
Spin Chains ◽  
Algebraic Equations ◽  
Quantum Spin Chains ◽  
Many Body ◽  
Finite Dimensional ◽  
The Family ◽  
Classical Correspondence ◽  
Remarkable Relation

This chapter is a review of the recently established quantum-classical correspondence for integrable systems based on the construction of the master T-operator. For integrable inhomogeneous quantum spin chains with gl(N)-invariant R-matrices in finite-dimensional representations, the master T-operator is a sort of generating function for the family of commuting quantum transfer matrices depending on an infinite number of parameters. Any eigenvalue of the master T-operator is the tau-function of the classical modified KP hierarchy. It is a polynomial in the spectral parameter which is identified with the 0th time of the hierarchy. This implies a remarkable relation between the quantum spin chains and classical many-body integrable systems of particles of the Ruijsenaars-Schneider type. As an outcome, a system of algebraic equations can be obtained for the spectrum of the spin chain Hamiltonians.

scholarly journals Epidemiological Profile and Determinants of Tuberculosis in Urban Nepalese Population

2019 ◽  
Vol 2 (2) ◽  
pp. 250-254
Author(s):  
Subash Bhatta ◽  
Nayana Pant
Keyword(s):  
Extrapulmonary Tuberculosis ◽  
Female Ratio ◽  
Short Course ◽  
Increased Risk ◽  
The Family ◽  
Directly Observed Treatment ◽  
History Of ◽  
The Mean ◽  
Epidemiological Profile ◽  
Male To Female

Introduction: Tuberculosis has evolved through ages to remain a major cause of morbidity and mortality worldwide. Despite having a very successful Directly Observed Treatment, Short-course program, tuberculosis is still one of the most widespread infections in Nepal. This study was done to observe the epidemiological profile of tuberculosis patients in an urban Nepalese population.Materials and Methods: 585 newly diagnosed cases of pulmonary and extrapulmonary tuberculosis in two tertiary level hospitals in the country were enrolled in the study during a period of 18months. A standard questionnaire was formatted and the required information was acquired with the help of interview and investigation reports.Results: The mean age of presentation was 35.76 with a male to female ratio of 1.48:1.57% of the cases had less than primary education with 26 % being illiterates. The most commonly involved occupational group was farmers (22%) followed by students (20%) and laborers (14%). 22% of cases had a history of contact with tuberculosis in the family. 41 % were smokers and 18 % abused alcohol. Pulmonary tuberculosis comprised 68% of the total cases. The most common extrapulmonary presentation was lymph node TB (28%) followed by pleural effusion (21.5%) and tubercular meningitis (16%).Conclusions: Young people with lower literacy levels and with a family history of tuberculosis are at increased risk of acquiring tuberculosis and community approaches for tuberculosis control should target this group to reduce the burden of the disease

To Jerusalem

2021 ◽  
pp. 146-169
Author(s):  
Elizabeth A. Clark
Keyword(s):  
Fourth Century ◽  
The Body ◽  
Solitary Confinement ◽  
Body Parts ◽  
Holy Land ◽  
Tour Guide ◽  
Return Trip ◽  
The Bible ◽  
Desert Fathers ◽  
The Family

Chapter 8 depicts the voyage to and settlement in Jerusalem, with a stop in Alexandria and surroundings, to meet bishops and holy men. On a return trip to Egypt, they visited the so-called desert fathers and attempted to leave them funds. Egypt and Palestine (called the “Holy Land” by Christians in this era) were the prime destinations for Christian pilgrims, women as well as men, from the fourth century onward. Some “Westerners” settled there and founded monasteries, including Melania’s own grandmother and other Roman aristocrats. The Bible provided a virtual tour guide for pilgrims in Palestine. The family of Constantine saw to the erection of the churches of the Holy Sepulcher in Jerusalem and of the Nativity in Bethlehem. Accompanying these developments was the burgeoning quest for relics (of the “True Cross,” of the body parts of martyrs and saints). Melania, too, sought relics for the monasteries she established in Jerusalem. For some years before undertaking the building of monasteries and soliciting inhabitants for them, however, she lived in semi-solitary confinement on the Mount of Olives. The author of the Life describes the ascetic practices in these establishments. After the monasteries were built, there is little evidence that Melania participated much in the larger worship life of Jerusalem, which is described in other sources. The author of the Life aligns his heroine with his own religious preferences and depicts her as a fierce opponent of “heresy.”

A Biometrical Study of the Kamloops Trout of Kootenay Lake, Salmo kamloops Jordan

1936 ◽  
Vol 2 (4) ◽  
pp. 359-377 ◽  
Author(s):  
C. McC. Mottley
Keyword(s):  
Relative Proportion ◽  
Body Parts ◽  
Many Body ◽  
Body Depth ◽  
Number Of Factors ◽  
Consistent Change ◽  
Spawning Run ◽  
Degree Of Maturity ◽  
Kootenay Lake ◽  
Taxonomic Groups

A study was made on 216 specimens of Kamloops trout ranging from 10 cm. to 75 cm. in length obtained from the angling fishery of Kootenay lake and the spawning run in the Lardeau river. Twenty-four characters commonly used in the description and differentiation of the taxonomic groups of salmonoid fishes were investigated and a biometrical analysis of the differences due to size and sex is presented. The analysis of the data shows that the form of an individual undergoes consistent change; its form and the relative proportion of many body parts are probably the resultant of a number of factors which are intimately related with the rate of growth and the degree of sexual maturity. In many characters, e.g. the head proportions and body depth, the mature males differ appreciably from the females. The results indicate that the characters investigated must be used with caution in the taxonomic study of fishes. In comparing specimens of trout for taxonomic purposes individuals of the same size, age, sex and degree of maturity should be used if possible.

scholarly journals Universal separability criterion for arbitrary density matrices from causal properties of separable and entangled quantum states

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Gleb A. Skorobagatko
Keyword(s):  
Quantum Systems ◽  
Many Body ◽  
Density Matrices ◽  
Positive Partial Transpose ◽  
Separability Criterion ◽  
Pair Density ◽  
Wide Range ◽  
The Family ◽  
Partial Transpose ◽  
General Physical

AbstractGeneral physical background of famous Peres–Horodecki positive partial transpose (PH- or PPT-) separability criterion is revealed. Especially, the physical sense of partial transpose operation is shown to be equivalent to what one could call as the “local causality reversal” (LCR-) procedure for all separable quantum systems or to the uncertainty in a global time arrow direction in all entangled cases. Using these universal causal considerations brand new general relations for the heuristic causal separability criterion have been proposed for arbitrary $$ D^{N} \times D^{N}$$ D N × D N density matrices acting in $$ {\mathcal {H}}_{D}^{\otimes N} $$ H D ⊗ N Hilbert spaces which describe the ensembles of N quantum systems of D eigenstates each. Resulting general formulas have been then analyzed for the widest special type of one-parametric density matrices of arbitrary dimensionality, which model a number of equivalent quantum subsystems being equally connected (EC-) with each other to arbitrary degree by means of a single entanglement parameter p. In particular, for the family of such EC-density matrices it has been found that there exists a number of N- and D-dependent separability (or entanglement) thresholds$$ p_{th}(N,D) $$ p th ( N , D ) for the values of the corresponded entanglement parameter p, which in the simplest case of a qubit-pair density matrix in $$ {\mathcal {H}}_{2} \otimes {\mathcal {H}}_{2} $$ H 2 ⊗ H 2 Hilbert space are shown to reduce to well-known results obtained earlier independently by Peres (Phys Rev Lett 77:1413–1415, 1996) and Horodecki (Phys Lett A 223(1–2):1–8, 1996). As the result, a number of remarkable features of the entanglement thresholds for EC-density matrices has been described for the first time. All novel results being obtained for the family of arbitrary EC-density matrices are shown to be applicable to a wide range of both interacting and non-interacting (at the moment of measurement) multi-partite quantum systems, such as arrays of qubits, spin chains, ensembles of quantum oscillators, strongly correlated quantum many-body systems with the possibility of many-body localization, etc.

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