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Author(s):  
Evgeniy Nedelkin ◽  
◽  
Alexander Khrustalev ◽  
Anna Babenko ◽  
Sergey Slepchenko ◽  
...  

The article presents the results of an archaeoparasitological and palynological study of a sample taken from the sewage drain of the Chorgun Tower. This is a fortification on the territory of the village of Chernorechie (South-Western Crimea). According to archaeological research, the construction of the keep dates back to the third quarter of the 15th century. Four types of eggs of intestinal parasites infecting humans and synanthropic animals were identified in the sample. Regarding parasitic and infectious gastrointestinal diseases, human whipworm and roundworm eggs found in the sample are indicative of relatively unfavorable sanitary conditions of the fortification. Based on the features of the archaeoparasitological spectrum, it can be concluded that anthelminthic agents were used or food with antiparasitic effects against roundworms was consumed. The difficult sanitary and epidemiological situation was also complicated by synanthropic rodents, such as rats and domestic mice, which could be a constant source of dangerous infections in the Chorgun Keep. A palynological study of the contents of the sewage runoff made it possible to obtain additional information on the nutrition of people who used the latrine facilities in the Chorgun Keep. What is equally important is that the study demonstrates the possibilities of methods for the study of canalization as a source of bioarchaeological information.


Author(s):  
Lyudmyla M. LUCHKA

Objective. The purpose of the article is to highlight book exchange as an important source of book acquisition process in the libraries of Katerinoslav - Dnipropetrovsk.  The object is libraries of different subordination as a system of collection-forming documents. Methods. Analytical-synthetic, system-structural, comparative and statistical methods are used during the research in accordance with the task. Results. The author revealed the peculiarities of book exchange process in the libraries of educational institutions, scientific societies of Katerynoslavshchyna. The exchange of publications with Kyiv, Galician and Lviv institutions is proved to be useful and important. The author retraced process of cooperation of city public libraries on local literature acquisition. Libraries and reading rooms of higher, secondary and lower agricultural educational institutions received professional publications of Katerinoslav societies free of charge. The article gives a picture of the current state of document exchange in the libraries of Dnipropetrovsk region. The constant source of library acquisition is territorial and domestic professional book exchange. Conclusions. Book exchange is an important component of the process of acquisition of high quality stock in Ukrainian libraries. This prprocess was actively carried out by Katerinoslav libraries in the 19th - early 20th centuries. Throughout history the book exchange has proven to be a necessary and useful source of acquisition and high quality service in the implementation of complex reader requests. Document exchange in the 21st century in Dnipropetrovsk region is changing its format (transition to e-resources), but remains an important source in the process of creating high quality collections.


2021 ◽  
Vol 932 ◽  
Author(s):  
Cara B.G. James ◽  
Nicola Mingotti ◽  
Andrew W. Woods

We present new experiments of particle-driven turbulent plumes issuing from a constant source of dense particle-laden fluid, with buoyancy flux, $B$ , in a uniform horizontal current, $u$ . Experiments show that a turbulent, well-mixed plume develops, in which the downward vertical speed $w$ decreases with depth $z$ according to $w = 0.76 (B/uz)^{1/2}$ while the horizontal speed rapidly asymptotes to the current speed $u$ , provided that the Stokes settling speed of the particles $v<0.92 w$ . For $v > 0.92 w$ , the particles separate from the plume fluid, and their depth $z$ increases according to the simple sedimentation trajectory $\textrm {d}z/{\textrm {d}\kern0.7pt x} = v/u$ . As the particles sediment, they form clusters of particles, which lead to fluctuations in the particle load with position, but do not appear to change the time-average sedimentation speed. We explore the impact of these results for deep-sea mining, in which the fate of the plume water as well as the particles is key for assessing potential environmental impacts.


2021 ◽  
pp. 69-73
Author(s):  
Leena El-Ali
Keyword(s):  

AbstractIn the Qur’an, fitna means social discord or personal ordeal. It has nothing to do with women. Nor are women naturally conniving. But alleged hadith attributed to no other than the Prophet himself expounds a different view, which is that women are the greatest source of fitna possible, and that half the inhabitants of hell will be women. Is it any wonder that many societies have therefore branded women first and foremost as a source of constant sexual enticement and sin, an enemy within?


2021 ◽  
Vol 82 (3) ◽  
pp. 219-221
Author(s):  
Sava Kolev

Radon gas has high mobility and is driven by advection and diffusion with the soil gas throughout connected and water-unsaturated pores and/or cracks in permeable rocks and soils. Hence the radon potential of the area could be dependent on not only geology as a constant source of radon but also from the changes of the saturation state of the ground. The loess complex, characterized by its permeability and usual state of unsaturation, covers 10% of the Bulgarian territory. The study deals with the principles of unsaturated domain modeling. An attempt of generic vertical infiltration model coinciding with the most upper part of loess vadose zone was performed.


Author(s):  
Ankur Sharma ◽  
Shreya Tiwari ◽  
Raj Kumar Chaurasiya ◽  
K.N. Nagaich

The Indian gooseberry is a monoecious tree and bears a unisexual flower where a high degree of cross-pollination is required for an ideal fruit set as well as better productivity. The fruit set, retention and yield in gooseberry depends on the nutritional and hormonal balance of the tree. The current work is based on the objective to estimate the fruit set, retention, sex ratio and yield in gooseberry after application of a recommended dose of fertilization (RDF) in association with farm yard manure (FYM) and biofertilizers (Azotobacter, Azospirillum and phosphate solubilizing bacteria). The maximum sex ratio was estimated in control (250.22 and 251.09) due to sufficient nitrogen fertilization. However, the highest fruit set, retention percent and yield per tree were reported with the treatment containing three-fourth of RDF in combination with Azotobacter, Azospirillum and PSB (phosphate solubilizing bacteria). Further, it was observed that about 25 to 50% replacement in RDF could be possible through biofertilizer application as a constant source of nutrients to trees.


2021 ◽  
Vol 3 (3) ◽  
pp. 146-156
Author(s):  
Christina Gnanamani ◽  
Shanthini Pandiaraj

Wireless communication is a constantly evolving and forging domain. The action of the RF input module is critical in the radio frequency signal communication link. This paper discusses the design of a RF high frequency transistor amplifier for unlicensed 60 GHz applications. The Transistor used for analysis is a FET amplifier, operated at 60GHz with 10 mA at 6.0 V. The simulation of the amplifier is made with the Open Source Scilab 6.0.1 console software. The MESFET is biased such that Sll = 0.9<30°, S12 = 0.21<-60°, S21= 2.51<-80°, and S22 = 0.21<-15o. It is found that the transistor is unconditionally stable and hence unilateral approximation can be employed. With these assumptions, the maximum value of source gain of the amplifier is found to be at 7.212 dB and the various constant source gain circles and noise figure circles are computed. The transistor has the following noise parameters: Fmin = 3 dB, Rn = 4 Ω, and Γopt = 0.485<155°. The amplifier is designed to have an input and output impedance of 50 ohms which is considered as the reference impedance.


2021 ◽  
Vol 34 ◽  
pp. 83-87
Author(s):  
Eufemia Fantetti

Linked by a series of idiomatic expressions used to describe sadness, loss and love, “Cross My Heart” is a lyric essay delving into the world of journaling bad decisions and broken relationships. A deep and private self appears in diaries; intense curiosity makes resisting the off-limit contents of the confidential accounts difficult for the author. In her search for understanding her place in the life, mind and heart of another, unwanted discoveries ensue. Her father, a constant source of emotional strength and support, offers inadequate advice.


Author(s):  
Jack Barbalet

A constant source in academic discussion of guanxi is a book, universally regarded as a template for understanding guanxi, first published in 1947 by Fei Xiaotong. The relevance of Fei’s model is critically assessed in the chapter. It demonstrates that Fei’s account of Chinese social relationships draws upon an idealized Confucianism rather than empirically-grounded social analysis. The discussion shows that Fei ignores non-kin relations in rural society, and an account of their importance is provided. A problem with Fei’s account of social obligation is identified. A proposed solution distinguishes between obligations generated through role compliance and obligations arising from exchange relations. Finally, it is shown that guanxi requires a notion of instrumental self-interest, absent in Fei’s account, and that interested action in guanxi operates through enhancing social standing or face, about which Fei has nothing to say. In this way the chapter clears the ground for discussion in subsequent chapters.


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