On the study of the experience of the adult Tatar population

1930 ◽  
Vol 26 (7) ◽  
pp. 29-41
Author(s):  
F. G. Mukhamedyarov

Determining the survival rate of the population and the order of its extinction is one of the main tasks of social and hygienic examination, the sanitary characteristics of a particular region of a particular population group. Without these data, it is difficult to get a correct idea of ​​the sanitary state of the study area. On the other hand, the study of the problem of experiencing is a rather difficult task and requires the use of complex methods. The essence of the method is to compare the numbers of the distribution by age of the deceased with the numbers of the distribution by age of the living and to obtain the probability of survival to the next age period. The probability of survival obtained in this way makes it possible to calculate the order of extinction of a non-existent (hypothetical) generation with age-related mortality equal to the force of mortality for the period of time for which the census took place.

2010 ◽  
Vol 14 (4) ◽  
pp. 570-578 ◽  
Author(s):  
LIANG CHEN ◽  
RUIXIA YAN

This study compares the development and use of evaluative expressions in the English narratives elicited from 80 Chinese–English bilinguals and 80 American monolingual peers at four ages – five, eight, ten, and young adults – using the wordless picture book Frog, where are you? (Mayer, 1969). Results revealed both similarities and differences between monolingual and bilingual groups. On the one hand, regardless of bilingual status, there is a clear age-related growth in the development and use of evaluative expressions. On the other hand, bilingual children in our study differed from monolingual children in the quantity and quality of evaluative clauses used. The results are discussed with respect to linguistic and cultural differences between English and Chinese.


2007 ◽  
Vol 4 (1) ◽  
pp. 13 ◽  
Author(s):  
T. Budiardi ◽  
T. Nursyams ◽  
Agus Oman Sudrajat

<p>Larval of fighting fish (<em>Betta splendens</em> Regan) requires precise live foods for its growth and survival. In this experiment, fish larvae were fed on either <em>Paramecium + Artemia, Paramecium + Artemia + Tubifex, Paramecium + Moina, or Paramecium + Moina + Tubifex</em>. The fish were fed <em>Paramecium</em> from day-2 till day-7 after hatching. There after, the live food was changed according to the treatments till day-28.  Results showed that fish fed on Paramecium + Artemia significantly had the highest total length (12.63 mm) than other treatments (11.86 mm). On the other hand, survival rate of fish had no significant affected by the treatments.</p> <p>Keywords: fighting fish, <em>Betta splendens</em>, <em>Paramecium</em>, <em>Moina</em>, <em>Artemia</em>, <em>Tubifex</em>, larvae</p> <p> </p> <p>ABSTRAK</p> <p>Larva ikan betta (<em>Betta splendens</em> Regan) membutuhkan jenis pakan alami yang tepat bagi kelangsungan hidup dan pertumbuhannya. Pada penelitian ini, larva ikan diberi pakan berupa <em>Paramecium</em> + <em>Artemia</em>, <em>Paramecium</em> + <em>Artemia </em>+ <em>Tubifex</em>, <em>Paramecium</em> + <em>Moina</em>, atau <em>Paramecium</em> + <em>Moina </em>+ <em>Tubifex.</em>  Ikan diberi pakan pakan berupa <em>Paramecium</em> dari hari ke-2 hingga hari ke-7. Setelah itu, pemberian pakan alami diubah berdasarkan masing-masing perlakuan hingga hari ke-28.  Hasil penelitian menunjukkan bahwa ikan yang diberi pakan <em>Paramecium</em> + <em>Artemia</em> memiliki tubuh secara signifikan lebih panjang (12,63 mm) dibandingkan perlakuan lainnya (11,86 mm).  Sementara itu, kelangsungan hidup tidak dipengatuhi oleh perlakuan.</p> <p>Kata kunci: ikan betta, <em>Betta splendens</em>, <em>Paramecium, Moina, Artemia, Tubifex</em>, larva</p>


2007 ◽  
Vol 1 (2) ◽  
pp. 69 ◽  
Author(s):  
Harton Arfah ◽  
, Alimuddin ◽  
K. Sumantadinata ◽  
Julie Ekasari

<p class="MsoBodyText2" style="line-height: normal;"><span style="font-size: 10pt;" lang="in" xml:lang="in">ABSTRACT<br /></span></p><p class="MsoBodyText2" style="line-height: normal;"><span style="font-size: 10pt;" lang="in" xml:lang="in">Experiment was performed to assess the effect of 17</span><span style="font-size: 10pt; font-family: Symbol;" lang="in" xml:lang="in"><span>a</span></span><span style="font-size: 10pt;" lang="in" xml:lang="in">-methyltestosterone (MT) treatment on Congo tetra fish larvae.<span>  </span>To evaluate the optimal pattern of MT treatment, three different treatments were administrated.<span>  </span>Three months old larvae were submerged in three different doses of MT; 1, 2 and 4 mg/l.<span>  </span>These studies showed that the highest percentage of male fish was obtained by 4 mg/l MT treatment, 87,17%.<span>  </span>The 2 mg/l and 1 mg/l MT treatments obtained 77,53% and 69,86% male respectively, two times higher than control, 38,96%.<span>  </span>On the other hand, the 4 mg/l MT treatment also resulted the highest percentage of hermaphrodite fishes, 17,58%.<span>  </span>The highest survival rate was shown by 1 mg/l MT treatment, 62,77% and the lowest was shown by the 4 mg/l MT treatment, 47,20%.<span>  </span>The highest rate of fish length and weight was shown by the 4 mg/l MT treatment, 4,4 cm and 1,65 gram respectively.<span>  </span>These findings suggest that MT treatment offers an advantage in growth of <span> </span>tetra Congo larvae. </span></p><p class="MsoBodyText2" style="line-height: normal;"><span style="font-size: 10pt;" lang="in" xml:lang="in">Key word :<span>  </span>Sex reversal, methyltestosterone, Congo tetra fish, <em>Micraleptus intterruptus.</em></span></p><p class="MsoNormal"><span lang="in" xml:lang="in"> </span></p><p class="MsoBodyText" style="text-align: center;" align="center"><span style="font-size: 10pt;" lang="in" xml:lang="in">ABSTRAK</span></p><p class="MsoBodyText" style="text-align: justify;"><span style="font-size: 10pt;" lang="in" xml:lang="in">Penelitian ini bertujuan untuk mengetahui pengaruh perendaman larva di dalam larutan hormon 17</span><span style="font-size: 10pt; font-family: Symbol;" lang="in" xml:lang="in"><span>a</span></span><span style="font-size: 10pt;" lang="in" xml:lang="in">-metiltestosteron pada dosis 1, 2 dan 4 mg/l larutan.<span>  </span>Persentase tertinggi ikan jantan dihasilkan<span>  </span>oleh perlakuan 4 mg/l, yaitu 87,17%.<span>  </span>Perlakuan 2 mg/l dan 1 mg/l masing-masing menghasilkan 77,53% dan 69,86% sedangkan kontrol menghasilkan 38,96% jantan.<span>  </span>Efek lain dari perlakuan MT ini adalah hermafroditisme.<span>  </span>Perlakuan 4 mg/l menghasilkan persentase hermafrodit tertinggi yaitu 17,58%, sedangkan pada kontrol kelangsungan hidup tertinggi diperoleh pada perlakuan 1 mg/l (62,77%) dan terendah pada perlakuan 4 mg/l (47,20%).<span>  </span>Hasil tersebut menunjukkan adanya pengaruh dosis hormon terhadap kelangsungan hidup ikan.<span>  </span>Pengukuran bobot dan panjang ikan pada setiap perlakuan menunjukkan nilai tertinggi dihasilkan oleh perlakuan 4 mg/l<span>  </span>yaitu 1,65 gram dan 4,40 cm.<span>  </span>Hal ini diduga bahwa hormon MT merangsang pula pertumbuhan ikan.</span></p><p class="MsoBodyText2" style="line-height: normal;"><span style="font-size: 10pt;" lang="in" xml:lang="in">Kata kunci :<span>  </span>Pergantian kelamin, metiltestosteron, ikan tetra Kongo, <em>Micraleptus intterruptus.</em></span></p>


Author(s):  
Djikengoue Kameni Patricia Linda ◽  
Mambe Tameghe Flora ◽  
Kpoumie Nsangou Amidou ◽  
Tonfack Achile Peguy

Zooplankton production and growth performance of post-larvae of common carp according to the level and frequency of fertilization with chicken droppings were studied between May and October 2017 at the IRAD pisciculture station in Foumban. To this end, two doses of hen droppings, namely 450 g/m3 (D450) and 600 g/m3 (D600), were each applied at two application frequencies (weekly (F2) and bimonthly (F1)). Thus, 1200 post-carp larvae were distributed in 12 identical concrete tanks (1.2m x 0.75m x 1m) each filled with 400 liters of water. The 2 doses applied at 2 frequencies were applied randomly in the 12 tanks in a complete random device comprising 3 treatments and 2 repetitions. Six days after fertilization, each tank was sown with zooplankton at a density of 7 individuals per liter (ind/l). The loading was carried out 12 days after fertilization at a density of 100 ind/m2. The results show that regardless of the dose and the frequency of droppings applied, the production of zooplankton was optimal 10 to 12 days after fertilization. Considering the growth performance, the tanks receiving the 600 g/m3 dose every 2 weeks presented the highest significant values ​​(p <0.05). On the other hand, the survival rate (36% on average) was not significantly influenced (p˃0.05) by the dose and the frequency of fertilization. The 600 g/m3 dose applied every two weeks can be recommended for the rearing of post-larvae common carp.


2020 ◽  
Vol 14 ◽  
Author(s):  
Raymond Salvador ◽  
Norma Verdolini ◽  
Beatriz Garcia-Ruiz ◽  
Esther Jiménez ◽  
Salvador Sarró ◽  
...  

Functional connectivity analyses are typically based on matrices containing bivariate measures of covariability, such as correlations. Although this has been a fruitful approach, it may not be the optimal strategy to fully explore the complex associations underlying brain activity. Here, we propose extending connectivity to multivariate functions relating to the temporal dynamics of a region with the rest of the brain. The main technical challenges of such an approach are multidimensionality and its associated risk of overfitting or even the non-uniqueness of model solutions. To minimize these risks, and as an alternative to the more common dimensionality reduction methods, we propose using two regularized multivariate connectivity models. On the one hand, simple linear functions of all brain nodes were fitted with ridge regression. On the other hand, a more flexible approach to avoid linearity and additivity assumptions was implemented through random forest regression. Similarities and differences between both methods and with simple averages of bivariate correlations (i.e., weighted global brain connectivity) were evaluated on a resting state sample of N = 173 healthy subjects. Results revealed distinct connectivity patterns from the two proposed methods, which were especially relevant in the age-related analyses where both ridge and random forest regressions showed significant patterns of age-related disconnection, almost completely absent from the much less sensitive global brain connectivity maps. On the other hand, the greater flexibility provided by the random forest algorithm allowed detecting sex-specific differences. The generic framework of multivariate connectivity implemented here may be easily extended to other types of regularized models.


2019 ◽  
Vol 186 (13) ◽  
pp. 416-416
Author(s):  
Theresa Conze ◽  
Andrzej Jurczak ◽  
Vanessa Fux ◽  
Piotr Socha ◽  
Axel Wehrend ◽  
...  

BackgroundWith the increasing popularity of planned caesarean section, the need for knowledge regarding this surgery has become increasingly important. The reported death and survival rates for caesarean sections vary widely. Another important aspect is the fertility rate in subsequent oestrous after caesarean section. The aim of this study was to investigate the mortality and survival rate of bitches during caesarean section. Additionally, the fertility of bitches after caesarean sections was determined.MethodsCaesarean sections which were performed in the years 1997–2009 at two university clinics were evaluated retrospectively. A distinction was made between bitches in which a conservative caesarean section was performed and bitches with a caesarean section followed by an ovariohysterectomy.ResultsA total of 482 caesarean sections were included in the study. The overall mortality rate was 3.11 per cent, with 2.59 per cent during or after a conservative caesarean section and 4.19 per cent during or after caesarean section with ovariohysterectomy. The reason for ovariohysterectomy was the owner’s preference in 63 bitches (47.01 per cent); in 71 (52.98 per cent) bitches, ovariohysterectomy was performed due to a medical indication. The fertility rate after caesarean section was 100 per cent.ConclusionThe results show a high mortality rate during and after caesarean section. On the other hand, caesarean section does not seem to have a big impact on further fertility. Further studies are needed to investigate possible reduction of litter sizes and the suitability of caesarean section in subsequent pregnancies.


Author(s):  
Mahmut Yanar ◽  
Çiğdem Çalım Akray ◽  
Ece Evliyaoğlu ◽  
Zeynep Erçen

In this study, the effects of Artemia sp. nauplii and micro capsulated feed on growth performance and survival rate of guppy (Poecilia reticulata) and goldfish (Carassius auratus) larvae were compared at the end of three weeks of rearing period. Length of goldfish larvae (4.82 mm) fed Artemia sp. (from 4 to 12/mL/day) were between 7.97 and 9.76 mm at the end of the trial while these values were between 6.80 and 7.21 mm for those fed microencapsulated feed (from 10 to 30 mg/L/day). On the other hand length of guppy larvae fed Artemia sp. (from 5 to 25/mL/day) were between 13.02 and 17.00 mm, whereas these values were remained between 11.98 and 12.38 mm for those fed microencapsulated feed (from 10 to 40 mg/L/day). A similar result was also observed in survival rates. Survival rate of goldfish larvae fed Artemia sp. were 88.91-97.61% in while those fed microencapsulated feed were 6.19-87.14%. On the other hand survival rate of guppy larvae fed Artemia sp. were 99.17-100.00% whereas those fed microencapsulated feed were 57.50-87.50%. Eventually, microencapsulated feed was not as successful as Artemia sp. on the growth and survival rate of larvae of both species.


Blood ◽  
1970 ◽  
Vol 36 (4) ◽  
pp. 470-479 ◽  
Author(s):  
MARTINE PAPIERNIK

Abstract A study was made of PHA-stimulated thymic lymphocyte transformation in 10 human fetuses ranging from 12 to 22 weeks of gestation. The results were compared with those obtained using circulating blood lymphocytes of the corresponding fetuses in seven cases. The degree of transformation of blood lymphocytes is independent of fetal age. On the other hand, thymic lymphocyte transformation is age-related. Until the 18th week of gestation, the per cent of transformed thymic lymphocytes is comparable to that of blood lymphocytes. After the 18th week of gestation, the per cent of transformed thymic lymphocytes diminishes to the level of adult thymic lymphocytes. The significance of these findings is discussed.


1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.


Author(s):  
A. V. Crewe

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.


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