scholarly journals ALTERNATE SOD PRODUCTION SYSTEM FOR ZOYSIAGRASS

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 588b-588
Author(s):  
Bridget A. Ruemmele ◽  
Robert Cunningham ◽  
M. C. Engelke

A limitation to distribution of some field-grown sod is the time required to produce a saleable product rooted sufficiently to retain its shape when removed from the ground. Research for a more efficient sod production process was examined using sod segments planted at a 1:100 plant:planting area ratio in an aboveground soilless, root-restricting system. Combinations of 3 growth media, 2 rooting stimulants, and 2 fertilizers each at 2 rates were evaluated to determine the most rapid and optimal sod development for zoysiagrass. Treatments were rated weekly for percent cover, rate of stolon development, and rooting. Although treatments with rooting stimulants generally scored higher than other treatments for rooting and percent cover, these differences were not consistently significantly different from week to week. No significant differences occurred among treatments for stolon development ratings. After 16 weeks of growth, sod strength was greatest when the growth medium was a peat and vermiculite mixture.

2021 ◽  
Vol 1 (2) ◽  
pp. 46-51
Author(s):  
Dwi Ayu Lestari, Vikha Indira Asri

Scheduling is defined as the process of sequencing the manufacture of a product as a whole on several machines. All industries need proper scheduling to manage the allocation of resources so that the production system can run quickly and precisely as of it can produce optimal product. PT. Sari Warna Asli Unit V is one of the companies that implements a make to order production system with the FCFS system. Thus, scheduling the production process at this company is also known as job shop production scheduling. The methods used in this research are the CDS method, the EDD method and the FCFS method. The purpose of this research is to minimize the production time and determine the best method that can be applied to the company. The results of this research showed that the makespan obtained in the company's scheduling system with FCFS rules was 458 minutes, and the results of scheduling using the CDS method obtained a makespan value of 329 minutes, then the best production scheduling method that had the smallest makespan value was the CDS method.


2019 ◽  
Vol 31 (5) ◽  
pp. 1391-1396
Author(s):  
Gordana Stojmenović ◽  
Lyubcho Varamezov

Business in modern business conditions requires a continuous process of improvement and investment in all activities in the company. In order to survive on the market, resist the challenges of competition, but also the demands of customers, companies are constantly innovating the production process in an effort to improve all the company's activities. One of the production systems that proved to be suitable for continuous improvement and improvement of the production process is Lean production system. It represents the way companies react to the challenges of the present and the future. The Lean production system offers a variety of instruments, and for their implementation and application, managers are at all levels of responsibility and responsibility. Bearing this in mind, it can be said that the Lean production system is part of the management accounting. In addition, it represents a complete philosophy of thinking and action, which results in significant results by adequate application. The condition and the assumption that this management philosophy will lead to proper effectiveness and efficiency and enable them to continually improve in the function of maximizing profits is the authorization of employees to engage in the process of continuous improvement and decision-making. Lean is based on certain principles and philosophies, including customer value, value flow mapping, continuous flow, system requirements, and continuous improvements. Lean focuses on the added value. Lean's principle is a continuous search for perfection, perfection in production and business cooperation, with complete elimination of losses. Companies that implement the Lean Concept are constantly looking for ways to continually improve their efficiency, reduce costs and improve the quality of their products.


1987 ◽  
Vol 42 (9-10) ◽  
pp. 1101-1108 ◽  
Author(s):  
Jochen Berlin ◽  
Christiane Mollenschott ◽  
Frank DiCosmo

The cell line CP-3 of Catharanthus roseus produces low levels of indole alkaloids during station­ary phase of growth, but increased levels when transferred to growth-limiting production media. Highest specific yields of alkaloids were usually achieved 8-15 days after transfer of the cells to the production medium. We attempted to reduce the time required for alkaloid production by altering preculture conditions, and by adding an elicitor preparation known to stimulate alkaloid accumulation in other cells. Reduction of 2,4-D in the last growth medium before transfer to production medium and a high initial inoculum load into the production medium resulted in rapid and greatest alkaloid accumulation (up to 2 mg ajmalicine/g dry mass or 40 mg/1 within 7 days). The addition of elicitor to the cell suspension stimulated high levels of tryptamine biosynthesis and accumulation under all culture conditions. Additionally, two cell lines derived from CP-3 cells and maintained on NAA/kinetin containing medium were selected for rapid growth in the absence of 2,4-D and were characterized with respect to their ajmalicine production. At a high inoculum load these cells produced up to 1.3 mg/g or 20 mg ajmalicine/1 when cultivated on the growth medium. The biotechnological utility of such cell lines is discussed.


2019 ◽  
Vol 11 (20) ◽  
pp. 5612 ◽  
Author(s):  
Anna Szeląg-Sikora ◽  
Jakub Sikora ◽  
Marcin Niemiec ◽  
Zofia Gródek-Szostak ◽  
Joanna Kapusta-Duch ◽  
...  

Currently, the level of efficiency of an effective agricultural production process is determined by how it reduces natural environmental hazards caused by various types of technologies and means of agricultural production. Compared to conventional production, the aim of integrated agricultural cultivation on commercial farms is to maximize yields while minimizing costs resulting from the limited use of chemical and mineral means of production. As a result, the factor determining the level of obtained yield is the soil’s richness in nutrients. The purpose of this study was to conduct a comparative analysis of soil richness, depending on the production system appropriate for a given farm. The analysis was conducted for two comparative groups of farms with an integrated and conventional production system. The farms included in the research belonged to two groups of agricultural producers and specialized in carrot production.


2019 ◽  
Vol 255 ◽  
pp. 02001 ◽  
Author(s):  
Inyang John ◽  
Andrew-Munot Magdalene ◽  
Syed Shazali Syed Tarmizi ◽  
Johnathan Tanjong Shirley

This paper reviews key production process for crude palm oil and highlights factors that highly influence the production of crude palm oil. This paper proposes a generic conceptual model for crude palm production process considering these factors. The conceptual model could be modified to consider other factors not included in this paper. The future research would be to construct a simulation model based on the conceptual model proposed in this paper and analyse the effect of these factors on the performance of crude palm oil production system.


Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5261
Author(s):  
Marcin Sońta ◽  
Andrzej Łozicki ◽  
Magdalena Szymańska ◽  
Tomasz Sosulski ◽  
Ewa Szara ◽  
...  

This paper presents the results of an interdisciplinary study aimed at assessing the possibility of using duckweed to purify and recover nutrients from the effluent remaining after struvite precipitation and ammonia stripping from a liquid fraction of anaerobic digestate in a biorefinery located at a Dutch dairy cattle production farm. The nutritional value of duckweed obtained in a biorefinery was assessed as well. Duckweed (Lemna minuta) was cultured on a growth medium with various concentrations of effluent from a biorefinery (EFL) and digested slurry (DS) not subjected to the nutrient recovery process. The study’s results showed that duckweed culture on the media with high contents of DS or EFL was impossible because they both inhibited its growth. After 15 days of culture, the highest duckweed yield was obtained from the ponds with DS or EFL contents in the medium reaching 0.39% (37.8 g fresh matter (FM) and 16.8 g FM per 8500 mL of the growth medium, respectively). The recovery of N by duckweed was approximately 75% and 81%, whereas that of P was approximately 45% and 55% of the growth media with EFL0.39% and DS0.39%, respectively. Duckweed obtained from the biorefinery proved to be a valuable high-protein feedstuff with high contents of α-tocopherol and carotenoids. With a protein content in duckweed approximating 35.4–36.1%, it is possible to obtain 2–4 t of protein per 1 ha from EFL0.39% and DS0.39% ponds, respectively.


2020 ◽  
Vol 29 (11) ◽  
pp. 2050179 ◽  
Author(s):  
Muhammad Rashid ◽  
Malik Imran ◽  
Atif Raza Jafri ◽  
Zahid Mehmood

This work has proposed a 4-stage pipelined architecture to achieve an optimized throughput over area ratio for point multiplication (PM) computation in binary huff curves (BHC) cryptography. The original mathematical formulation of BHC is revisited with an objective to reduce the required area. Consequently, a simplified formulation of BHC is obtained with 43% reduction in the hardware resources. As far as the throughput is concerned, it is improved first by reducing the critical path and second by minimizing the number of clock cycles (CCs) required to compute one PM. The critical path is reduced through the placement of pipeline registers, whereas the number of required CCs are minimized through an efficient scheduling of computations. These two factors i.e., the area reduction and throughput optimizations, have resulted in maximizing the throughput over area ratio. The proposed pipelined architecture is implemented over [Formula: see text] field, using standard NIST curve parameters. The architecture is modeled in Verilog and synthesized using Xilinx (ISE 14.7) design tool on Virtex 7 FPGA. The implementation results show that 17% improvement in clock frequency, 13% reduction in the time required to compute one PM and 2.6% improvement in throughput/area are achieved when compared with the most recent state of the art solutions.


2014 ◽  
Vol 611 ◽  
pp. 339-345 ◽  
Author(s):  
Pavol Božek ◽  
Peter Pokorný

Logistics is primarily to address issues with whose functional, organizational, personnel and material means can be improved and optimize the entire course material flow businesses, which shall logistics integration business functions. Production logistics means a sum of logistical tasks and measures for preparation and execution of the production process. Includes all activities associated with material and information flows of raw materials, auxiliary and production materials from the warehouse to the production of raw materials and semi-finished goods from the warehouse and purchased parts through the various steps of the manufacturing process including all buffer stores, through the installation of the finished goods warehouse.


2016 ◽  
Vol 82 (14) ◽  
pp. 4371-4378 ◽  
Author(s):  
Nazrul Islam ◽  
Attila Nagy ◽  
Wesley M. Garrett ◽  
Dan Shelton ◽  
Bret Cooper ◽  
...  

ABSTRACTExtracellular proteins play important roles in bacterial interactions with the environmental matrices. In this study, we examined the extracellular proteins fromEscherichia coliO157:H7 and O104:H4 by tandem mass spectrometry. We identified 500 and 859 proteins from the growth media ofE. coliO157:H7 and O104:H4, respectively, including 371 proteins common to both strains. Among proteins that were considered specific toE. coliO157:H7 or present at higher relative abundances in O157:H7 medium, most (57 of 65) had secretion signal sequences in their encoding genes. Noticeably, the proteins included locus of enterocyte effacement (LEE) virulence factors, proteins required for peptidyl-lipoprotein accumulation, and proteins involved in iron scavenging. In contrast, a much smaller proportion of proteins (37 of 150) that were considered specific to O104:H4 or presented at higher relative abundances in O104:H4 medium had signals targeting them for secretion. These proteins included Shiga toxin 2 subunit B and O104:H4 signature proteins, including AAF/1 major fimbrial subunit and serine protease autotransporters. Most of the abundant proteins from the growth medium ofE. coliO104:H4 were annotated as having functions in the cytoplasm. We provide evidence that the extensive presence of cytoplasmic proteins inE. coliO104:H4 growth medium was due to biological processes independent of cell lysis, indicating alternative mechanisms for this potent pathogen releasing cytoplasmic contents into the growth milieu, which could play a role in interaction with the environmental matrices, such as pathogenesis and biofilm formation.IMPORTANCEIn this study, we compared the extracellular proteins from two of the most prominent foodborne pathogenicE. coliorganisms that have caused severe outbreaks in the United States and in Europe.E. coliO157:H7 is a well-studied Shiga toxigenic foodborne pathogen of the enterohemorrhagic pathotype that has caused numerous outbreaks associated with various contaminated foods worldwide.E. coliO104:H4 is a newly emerged Shiga toxigenic foodborne pathogen of the enteroaggregative pathotype that gained notoriety for causing one of the most deadly foodborne outbreaks in Europe in 2011. Comparison of proteins in the growth medium revealed significant differences in the compositions of the extracellular proteins for these two pathogens. These differences may provide valuable information regarding the cellular responses of these pathogens to their environment, including cell survival and pathogenesis.


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