scholarly journals Uji Fisik Sediaan Gel Ekstrak Tongkol Jagung (Zay Mays L)

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Indri Kusuma Dewi ◽  
Mey Rachmawati ◽  
Fathiya Abdinnisa' Ma'rifah ◽  
Puspita Susilowati
Keyword(s):  
Zea Mays ◽  
Water Content ◽  
Zea Mays L ◽  
Physical Appearance ◽  
Homogeneity Test ◽  
Test Results ◽  
Physical Test ◽  
Corn Cobs ◽  
Effect Method ◽  
Organoleptic Parameters

Abstract Background : Corn cobs have the potential to protect the skin, so far the research has only been limited to testing the extracts and has not been formed in a cosmetic preparation. Gel is a cosmetic preparation that is ideal for sunscreens because it is less oily, not sticky, soft, elegant, can form a layer of film that adheres well and protects the skin, and evaporation of water content creates a soothing and pleasant effect. Method: The method is used to determine the physical appearance of the gel with organoleptic parameters, homogeneity, dispersion and absorbency. Result: The purpose of this study was to determine the results of the physical test of sunscreen gel preparations from corn cobs extract (Zea mays L). Conclusion: The physical test results from the sunscreen gel extract of corn cobs extract (Zay Mays L.) had the results of organoleptic test, homogeneity test, spreadability test and adherence to the standard.

scholarly journals Preparing of Cornstarch (Zea mays) Bioplastic Using ZnO Metal

2018 ◽  
Vol 1 (1) ◽  
pp. 23
Author(s):  
Nurwani Hayati ◽  
Lazulva Lazulva
Keyword(s):  
Tensile Strength ◽  
Zea Mays ◽  
Water Vapor ◽  
Water Content ◽  
Transmission Rate ◽  
Test Results ◽  
Mixing Process ◽  
Water Vapor Transmission Rate ◽  
Water Vapour Transmission Rate ◽  
Water Vapor Transmission

The manufacture of the bioplastic was done through the mixing process using an aquades solvent with a ratio massa 10 gram and 7 gram cornstarch, 150 mL aquades, 2 Ml glycerol and 0,5 gram ZnO. This study aim to find out physical characteristies (water vapour transmission rate, water content, thickness,biodegradation) and mechanical charateristics (tensile strength, elongasi, modulus young) are made of cornstrach (Zea mays) using ZnO metal. From the test results tensile strength was 2.744-4.018 Mpa, percentage of elongation was 28.4632.383%, modulus young’s was 8.9031026535-14.08617709Mpa, thickness was 0.16-0.29mm, water vapor transmission rate was 0.4329-1.52525g/m2.24 hours, water content was 13.5-14.5%, and biodegradation was 3.7798-7.0346% and 455-809 days.

scholarly journals Penggunaan Desikan Abu Dan Lama Simpan Terhadap Kualitas Benih Jagung (Zea mays L.) Pada Penyimpanan Ruang Terbuka

Agrologia ◽  
2018 ◽  
Vol 1 (1) ◽  
Author(s):  
M. K Lesilolo ◽  
Jacob Patty ◽  
N. Tetty
Keyword(s):  
Zea Mays ◽  
Water Content ◽  
Seed Weight ◽  
Zea Mays L ◽  
Growth Speed ◽  
Maize Seed ◽  
Seed Growth ◽  
Two Factors ◽  
Result Show ◽  
Growth Vigor

This study was aimed to determine the proper dose of ash desiccant on maize seed stored for 30, 60 and 90 days. The design used was a Completely Randomized Factorial Design, with two factors and three replications.  The first factor was desiccant dose (D) : Do = 0 % (control), D1 = 5 % (12.5 g of seed weight), D2 = 10% (25 g of seed weight), D3 = 15 % (37 g of seed weight), D4 = 20 % (50 %g of seed weight), D5 = 25 % (62.5 g of seed weight).  The second factor was length of storage (S) : S1 = 30 day storage, S2 = 60 day storage and S3 = 90 day storage. The result show that use of desiccant only gave effect on the water content of seeds (12.31 %) and speed of seed growth vigor parameters (24.84 %).  Use of desiccant in 90 day storage were able to maintain water content of seeds (12.43 %), seed germination viability parameter (100 %), and vigor of seeds, which consisted of seed growth simultaneity (66.77 %) and seed growth speed (28.71 %).  The interaction between the use off ash desiccant and the length of storage had no effect on  viability and vigor of maize (Zea mays L) seeds but had an effect on their water content after storage (12.73%).

scholarly journals THE EFFECTS OF B, K10, AND AR CHROMOSOMES ON THE RESISTANCE OF MAIZE TO VIRAL INFECTION

Genetics ◽  
1978 ◽  
Vol 90 (2) ◽  
pp. 331-338
Author(s):  
Scott C McGirr ◽  
J E Endrizzi
Keyword(s):  
Zea Mays ◽  
Viral Infection ◽  
Mosaic Virus ◽  
Zea Mays L ◽  
Brome Mosaic Virus ◽  
B Chromosomes ◽  
Maize Dwarf Mosaic Virus ◽  
Barley Stripe Mosaic Virus ◽  
Test Results ◽  
Leaf Necrosis

ABSTRACT Studies were conducted to determine if accessory (B) chromosomes, the abnormal tenth (K10) chromosome or the aberrant ratio (AR) phenomenon of maize (Zea mays L.) affect the resistance of the plants to viral infection. Genetically similar stocks of maize with and without these elements were compared to determine what effect they would have on the plants response to Brome Mosaic Virus (BMV), Maize Dwarf Mosaic Virus (MDMV), Wheat Streak Mosaic Virus (WSMV) and Barley Stripe Mosaic Virus (BSMV).—The test results with BSMV were not found to be conclusive. With BMV and MDMV, neither the B orK10 chromosomes were found to alter infections; however, these chromosomes were found to affect the resistance of the plants to WSMV infection. The B chromosomes were found to delay the onset of leaf necrosis by 15%, while the K10 chromosome was found to increase the susceptibility to necrosis by 100%. The AR phenomenon was not found to alter the resistance of maize to BMV infection. However, it was found to increase the susceptibility of maize to MDMV infection by 36% and to decrease the susceptibility of maize to WSMV infection by 92%.

scholarly journals Root Length and Vapour Pressure Deficit: Effect on Relative Water Content in Zea Mays L.

1971 ◽  
Vol 24 (3) ◽  
pp. 805 ◽  
Author(s):  
LA Downey ◽  
TC Mitchell
Keyword(s):  
Zea Mays ◽  
Water Content ◽  
Vapour Pressure ◽  
Root Length ◽  
Relative Water Content ◽  
Zea Mays L ◽  
Vapour Pressure Deficit ◽  
Personal Communication ◽  
Male Sterile ◽  
Relative Water

The pair of lodicules situated at the base of the ovary and adjacent to the lemma of the wheat floret have long been known to be involved in the opening of the wheat floret at anthesis (see Arber 1965). At anthesis, the lodicules swell and force the lemma away from the palea, allowing the stamens to grow out from the floret. Some minutes later and presumably in response to a stimulus associated with pollination (male-sterile florets may remain open for many hours: Dr. A. T. Pugsley, personal communication) the lodicules collapse and the floret closes. We are studying the events which lead to this rapid swelling and degeneration of the lodicule in wheat and noticed that information about the nature of the vascular tissues in lodicules is very meagre.

scholarly journals The effect of variation in the amount of Hemicellulose from Corn Cobs (Zea mays L) and pH on Metronidazole Microparticle Release

2020 ◽  
Vol 1462 ◽  
pp. 012003
Author(s):  
Gabena Indrayani Dalimunthe ◽  
Muchlisyam ◽  
Urip Harahap ◽  
Azizah Nasution
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Corn Cobs

Effet du potentiel osmotique du milieu nutritif des racines sur la pénétration et la migration du 42K fourni par voie foliaire

1974 ◽  
Vol 52 (7) ◽  
pp. 1469-1473 ◽  
Author(s):  
André Chamel ◽  
Bernadette Bougie
Keyword(s):  
Zea Mays ◽  
Polyethylene Glycol ◽  
Water Stress ◽  
Water Content ◽  
Osmotic Potential ◽  
Zea Mays L

The uptake and translocation of 42K deposited on corn leaves (Zea mays L.) decrease significantly when the osmotic potential of culture solutions is lowered to –8.2 atm with polyethylene glycol (PEG 1000), [Formula: see text] before the application of 42K. The effect of this water stress on the translocation and distribution of 42K was not completely reversible in plants temporarily growing on the solution of smaller osmotic potential. After a 25-h period of recovery on a solution without PEG, there was always a difference between plants either not treated or treated previously with PEG. It appears clearly that the rates of translocation vary directly with the water content of plants.

scholarly journals Engineering solutions applied to pneumatic drills to reduce losses of dust from dressed seeds

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
D. Pochi ◽  
M. Biocca ◽  
G. Brannetti ◽  
R. Fanigliulo ◽  
P. Gallo ◽  
...  
Keyword(s):  
Zea Mays ◽  
Fixed Point ◽  
Zea Mays L ◽  
Constant Pressure ◽  
Ground Level ◽  
Test Results ◽  
Maize Seed ◽  
Plastic Container ◽  
Electrostatic Filter ◽  
Seed Distribution

Neonicotinoid insecticides (imidacloprid, clothianidin, thiamethoxam) and fipronil for maize (Zea mays L.) seed dressing have been claimed to play a role in honey bee (Apis mellifera L.) decline, since pneumatic precision drills used for sowing contribute to the dispersion of the abrasion dust produced by dressed seeds. The active ingredients (a.i.) can contaminate the environment and can lead to the exposure of operators and bystanders during sowing operations. To achieve a significant reduction of dust drift and to enhance the safety for the operators, CRA-ING studied and developed novel engineering solutions applicable to drills, based on an air-recycling/filtering system. In the first system, the air’s excess is forced outward through suitable filters placed on the modified lid of the seed hopper. It can be easily applied to commercial drills in use. The second system was specifically designed for new drills. It consists of a collector duct that receives the air expelled from the vacuum fan opening, creating constant pressure conditions. Part of the air is recycled into the seed hoppers, as the air in excess is directed outward through a single main filter. A third system, based on the second one, entails the use of an electrostatic filter to improve its efficiency. Moreover, to avoid the operator’s exposure to the dust during the seed loading, we show an integrated solution based on the use of a modified pre-charged plastic container that replace the drill’s hoppers. Preliminary tests ascertained the regular seed distribution with the drills equipped with the prototypes. Then, trials were carried out at fixed point and in field, for detecting the amounts of the drifted a.i., using commercial maize seed dressed with thiamethoxam, imidacloprid, clothianidin and fipronil. The test results show powder and a.i. drift reductions up to a maximum of 94.5% measured at ground level (with fipronil as a.i.) as a consequence of the use of the prototypes.

scholarly journals ÉPOCAS DE SEMEADURA DE MILHO NA REGIÃO NORTE DE MATO GROSSO

Nativa ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 241
Author(s):  
Cassiano Spaziani Pereira ◽  
Ezequel Giese ◽  
Ivan Vilela Andrade Fiorini ◽  
Anderson Lange
Keyword(s):  
Zea Mays ◽  
Water Content ◽  
Leaf Area ◽  
Relative Water Content ◽  
Dry Matter ◽  
Zea Mays L ◽  
Block Design ◽  
Mato Grosso ◽  
The North ◽  
Relative Water

Existem poucas informações sobre a melhor época de semeadura de milho, durante o período da “segunda safra” no norte de Mato Grosso. O objetivo do trabalho foi verificar o comportamento produtivo de três híbridos de milho, semeados em seis épocas, durante a “segunda safra,” ou “safrinha”, no norte de Mato Grosso, Sinop-MT. O experimento foi conduzido em um Latossolo Vermelho Amarelo distrófico típico argiloso, entre janeiro e julho de 2014. O delineamento experimental foi em blocos ao acaso, com quatro repetições em esquema fatorial 3 x 6. Utilizou-se três híbridos comerciais simples e “precoces”: Maximus®; Truck (Syn7316)® e Status (Syn7205)®. As épocas de semeadura ocorreram aos 0, 7, 14, 21, 28 e 35 Dias após a semeadura de 26/01, correspondendo as datas de 26/01; 02/02; 09/02; 16/02; 23/02 e 02/03 de 2014, respectivamente. Avaliou-se a altura de plantas, área foliar, massa seca, teor relativo de água e produtividade da cultura. No florescimento, os menores teores de água nas folhas ocorreram nas plantas semeadas entre os dias 16/02 e 23/02. O crescimento vegetativo do milho foi o menor na época de semeadura entre os dias 09/02 a 23/02. Os híbridos Truck®, Máximus® e Status® não apresentaram diferença de produtividade e são mais produtivos quando semeados no final do período de segunda safra, entre os dias 16/02 a 02/03.Palavras-chave: Zea mays L, milho segunda safra, matéria seca, área foliar, teor relativo de água. MAIZE SEED TIMES IN THE NORTH REGION OF MATO GROSSO ABSTRACT:Were not sufficient information’s about the best time sowing of corn crop, during period of maize off-season in the north of Mato Grosso. The objective of this work was to verify the productive behavior of three maize hybrids, sown in six seasons, during the "second harvest," in the north of Mato Grosso, Sinop-MT. The experiment was conducted in a typical clayey dystrophic Yellow Red Latosol between January and July 2014. The experimental design was a randomized complete block design with four replicates in a 3 x 6 factorial scheme. Three commercial hybrids were used: Maximus®; Truck (Syn7316) ® and Status (Syn7205) ®. Sowing times occurred on day after sowing of date based of 01/26; respectively for datas: 01/26; 02/02; 09/02; 16/02; 23/02 and 02/03 of 2014. The variables analyzed the height of plants, stem diameter, leaf area, dry matter, relative water content and crop productivity were evaluated. At flowering, the lowest leaf water contents occurred in the plants sown between February 16 and February 23. The maize vegetative growth was the lowest in the sowing season between 09/02 to 23/02. The Hybrids Truck, Maxima and Status had a productivity difference and are more productive when sown at the end of the second crop period, between February 16 to March 2.Keywords: Zea mays L., maize off-season, dry matter, leaf area, relative water content. DOI:

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