Channel Pattern Variability and Stream Characteristics: A Study of Tulsi and Bhogawati River using Geoinformatics

AbstractThis paper aims at studying open channel geometries in a layer-bed-type immobilized enzyme reactor with computer-aided simulations. The main properties of these reactors are their simple channel pattern, simple immobilization procedure, regenerability, and disposability; all these features make these devices one of the simplest yet efficient enzymatic microreactors. The high surface-to-volume ratio of the reactor was achieved using narrow (25–75 μm wide) channels. The simulation demonstrated that curves support the mixing of solutions in the channel even in strong laminar flow conditions; thus, it is worth including several curves in the channel system. In the three different designs of microreactor proposed, the lengths of the channels were identical, but in two reactors, the liquid flow was split to 8 or 32 parallel streams at the inlet of the reactor. Despite their overall higher volumetric flow rate, the split-flow structures are advantageous due to the increased contact time. Saliva samples were used to test the efficiencies of the digestions in the microreactors. Graphical abstract

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River channel pattern controls on the quality of sandstone reservoirs: a case study from the Jurassic Shaximiao Formation of western Sichuan Basin, China

Journal of Petroleum Science and Engineering ◽

10.1016/j.petrol.2021.108925 ◽

2021 ◽

pp. 108925

Author(s):

Xiaoju Zhang ◽

Meiyan Fu ◽

Hucheng Deng ◽

Shuang Zhao ◽

Jon G. Gluyas ◽

...

Keyword(s):

Sichuan Basin ◽

River Channel ◽

Channel Pattern ◽

Western Sichuan ◽

Sandstone Reservoirs ◽

Western Sichuan Basin

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USABLE SECURITY IN BIOMETRIC AUTHENTICATION SYSTEMS

STRATEGIES XXI - Command and Staff College ◽

10.53477/2668-2028-21-37 ◽

2021 ◽

Vol 17 (1) ◽

pp. 287-292

Author(s):

Adriana-Meda UDROIU ◽

Ștefan-Antonio DAN-ȘUTEU

Keyword(s):

Iris Recognition ◽

Accurate Method ◽

Biometric Authentication ◽

Usable Security ◽

Security Systems ◽

Field Methods ◽

Secure Systems ◽

Authentication System ◽

Secure Authentication ◽

Pattern Variability

Abstract: We introduce the term usable security to refer to security systems, models, mechanisms and applications that have as the main goal usability. Secure systems cannot exist without secure authentication methods. Thus we outline biometric authentication methods and we focus on iris recognition because is the most reliable and accurate method for human identification]. The most important advantage of iris biometric over other biometrics is that irises have enormous pattern variability meaning that the variation between individual is almost maximum and variation for any person across time or conditions is minimum. Taking into consideration this observations, this survey covers researches in this field, methods of technical implementation and the usability of this method as an authentication system on iOS environment.

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Linking rivers to the rock record: Channel patterns and paleocurrent circular variance

Geology ◽

10.1130/g49121.1 ◽

2021 ◽

Author(s):

C.P. Galeazzi ◽

R.P. Almeida ◽

A.H. do Prado

Keyword(s):

Water Discharge ◽

Global Scale ◽

Sedimentary Record ◽

Discharge Data ◽

Alluvial Rivers ◽

Channel Pattern ◽

Fluvial Deposits ◽

Circular Variance ◽

Rock Record ◽

Channel Patterns

Alluvial rivers are the most important agents of sediment transport in continental basins, whose fluvial deposits enclose information related to the time when rivers were active. In order to extract the most information from fluvial deposits in the sedimentary record, it is imperative to quantify the natural variability of channel patterns at the global scale, explore what controls may influence their development, and investigate whether channel pattern information is preserved in the alluvial plains in order to develop tools for recognizing them in the sedimentary record. By surveying 361 reaches of modern alluvial rivers with available water discharge data at a global scale, we present a quantitative channel pattern classification based on sinuosity and channel count index applicable to the recognition in the rock record. A continuum of channel patterns ranging from high-sinuosity single channel to lowsinuosity multichannels is documented, along with the proportion of depositional elements in their alluvial plains and their conditions of occurrence. Preserved barforms in the alluvial plains of these rivers are used to infer and quantify paleoflow directions at the channel-belt scale and result in ranges of paleocurrent circular variance that may lead to channel pattern identification in the rock record. Data from this work indicate that the recognition of channel patterns may be used to predict paleogeographic features such as the scale of drainage basin area and discharge, slope, and annual discharge regimes.

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Analysis Of Egg Marketing On Chicken Farming Partnership Pattern in Lamonggedo Jaya Farmer Group Baruga District Of Kendari City

Indonesian Journal Of Animal Agricultural Science (IJAAS) ◽

10.33772/ijaas.v3i2.18355 ◽

2021 ◽

Vol 3 (2) ◽

Author(s):

Rinawanti Rinawanti ◽

La Ode Nafiu ◽

La Ode Arsad Sani

Keyword(s):

Laying Hens ◽

Marketing Channel ◽

Marketing Channels ◽

Channel Pattern ◽

Business Partnership ◽

Marketing Margins

The research aims to analyze the marketing of eggs in the chicken farming business partnership pattern in the group of farmers Lamonggedo Jaya, Baruga District, Kendari City in December 2020. The object of the study was laying hens as well as all aspects related to egg marketing and determined purposively. Variables in the research in the form of characteristics of respondents, marketing agencies, marketing channels, marketing margins, costs and profits of each marketing institution are analyzed qualitatively and quantitatively. The results of the analysis showed there are four patterns of egg marketing channels, among others, (1) Breeder  company  great traders  retailer merchants  end consumer, (2) Breeder  company  great traders  retailer merchants  end consumer, (3) Breeder  company  retailer merchants  end consumer, (4) Breeder  company  end consumer. The highest margin on the 1st marketing channel pattern is Rp. 17,500/shelf, the 4th lowest marketing channel is Rp. 4,000/shelf and the marketing channel in the highest expenditure is the 4th marketing channel Rp. 5,318/shelf. The marketing channel that has the highest profit is the 1st marketing channel Rp. 12.182/shelf. The most efficient marketing channel used by end consumers is the 4th marketing channel because of its lowest marketing margin value.

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