The feedback mechanism of nitrate inhibition of nitrogenase activity in soybean may involve asparagine and/or products of its metabolism

Lactotrophs, as many other endocrine cells, change their morphology in response to factors influencing their secretory activity. Secretion of prolactin (PRL) from lactotrophs, like that of other anterior pituitary hormones, is under the control of the hypothalamus. Unlike most anterior pituitary hormones, PRL has no apparent target gland which could modulate the endocrine activity of lactotrophs. It is generally agreed that PRL regulates its own release from lactotrophs via the short loop negative feedback mechanism exerted at the level of the hypothalamus or the pituitary. Accordingly, ultrastructural morphology of lactotrophs is not constant; it is changing in response to high PRL levels showing signs of suppressed hormone synthesis and secretion.By transmission electron microscopy and morphometry, we have studied the morphology of lactotrophs in nontumorous (NT) portions of 7 human pituitaries containing PRL-secreting adenoma; these lactotrophs were exposed to abnormally high PRL levels.

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DISTURBANCE OF THE FEEDBACK MECHANISM OF THE ADRENOCORTICAL SYSTEM IN THE ALLOXAN DIABETIC RAT

Acta Endocrinologica ◽

10.1530/acta.0.072s031 ◽

1973 ◽

Vol 71 (4_Suppl) ◽

pp. S31

Author(s):

J. Langholz ◽

M. L'age

Keyword(s):

Feedback Mechanism ◽

Diabetic Rat ◽

Adrenocortical System

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Kombinasi Mode Cipher Block Chaining Dengan Algoritma Triangle Chain Cipher Pada Penyandian Login Website

J-SAKTI (Jurnal Sains Komputer dan Informatika) ◽

10.30645/j-sakti.v2i1.51 ◽

2018 ◽

Vol 2 (1) ◽

pp. 1

Author(s):

Dafirius Lombu ◽

Siska Dame Tarihoran ◽

Irwan Gulo

Keyword(s):

Operation Mode ◽

Feedback Mechanism ◽

Database Access ◽

Original Meaning ◽

Mode Of Operation ◽

Encryption And Decryption ◽

Cryptographic Algorithms ◽

Block Chaining

Generally, the database access of a website lies in the user login. When the login data is not accompanied by security techniques, it is very easily accessible by other parties. One effort that can be done to solve the problem is to encode the login data of website users based on cryptographic technique algorithm. Triangle Chain Cipher (TCC) is one of the classic cryptographic algorithms that encode data doubly and generate keys randomly along the plain. The process of encryption and decryption are interdependent to be one of the advantages of this algorithm. This algorithm will be more effective when combined with the Cipher Block Chaining (CBC) operation mode that is widely used in modern cryptographic algorithms today. The feedback mechanism between the blocks in this mode of operation is the operating advantage. This study describes how to combine the mode of operation of block chaining cipher with triangle chain cipher algorithm so that cipher data login website generated more random and difficult to find its original meaning.

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Unstandardizing Testing: Low-Scoring American Minority Students in the Crosshairs of Conservative Policymakers

Journal of Education in Black Sea Region ◽

10.31578/jebs.v3i2.131 ◽

2018 ◽

Vol 3 (2) ◽

Author(s):

Sami Chedhli Nighaoui

Keyword(s):

Critical Race Theory ◽

Minority Students ◽

Standardized Tests ◽

Feedback Mechanism ◽

Cultural Bias ◽

Testing System ◽

Quantitative Methodology ◽

Race Theory ◽

Cultural Backgrounds ◽

Opt Out

That standardized tests do not accurately assess the true competencies of minority test takers is a widely shared claim among conservative educationists. The opt-out-of-testing community has lately grown unprecedentedly vocal in several states, questioning even more seriously the accountability of the testing system altogether. This paper adopts a Critical Race Theory perspective to investigate the conceptual underpinnings of conservative criticism as well as the interpretations made popular using quantitative methodology. The key premise of this paper is that a colorblind approach to testing understates the importance of a range of unquantifiable variables, mainly the linguitic and cultural backgrounds of the test takers, in determining assessment outcome. It attempts to demonstrate where specifically standardized tests may not be used as a reliable feedback mechanism and suggests that a more flexible assessment paradigm be considered, one that engages learning quality followup to keep cultural bias to a strict minimum.

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