Root sampling method by hollow cylinder-pin net method

Root Research ◽  
2021 ◽  
Vol 30 (1) ◽  
pp. 5-7
Author(s):  
Akimasa NAKANO ◽  
Eriko MASUDA ◽  
Yoshiyuki ISHIHARA
Keyword(s):  
Hollow Cylinder ◽  
Sampling Method ◽  
Net Method ◽  
Root Sampling

scholarly journals Diversitas dan Karakteristik Alga Merah (Rhodophyta) pada Akar Mangrove di Teluk Serewe Kabupaten Lombok Timur

2018 ◽  
Vol 18 (1) ◽  
pp. 80
Author(s):  
Mursal Ghazali, Hijjatul Husna, Sukiman
Keyword(s):  
Red Algae ◽  
Mangrove Forest ◽  
Leaf Blade ◽  
Sampling Method ◽  
Purposive Sampling ◽  
Mangrove Root ◽  
Root Sampling

Abstrak Alga merah (Rhodophyta) merupakan tumbuhan tingkat rendah yang umumnya tumbuh  melekat pada substrat tertentu seperti pada karang, lumpur, pasir, batu dan benda keras lainnya. Salah satunya melekat pada mangrove yang merupakan kawasan  bernutrisi tinggi. Salah satu daerah yang memiliki hutan mangrove cukup luas ialah Teluk Serewe Kecamatan Jerowaru Lombok Timur. Penelitian ini bertujuan untuk mengetahui keanekaragaman  jenis dan karakteristik alga merah yang terdapat pada akar mangrove. Pengambilan sampel pada 4 stasiun  menggunakan  metode purposive sampling dan  jelajah pada saat air surut. Jarak pengambilan sampel yaitu 800 m pada setiap stasiun. Berdasarkan hasil penelitian alga merah yang di peroleh sebanyak 11 spesies yaitu, 4 spesies dari genus Bostrychia, 3 spesies dari genus Caloglossa, 2 spesies dari genus Catenella, 1 spesies dari genus Gelidium, 1 spesies dari genus Stictosiphonia. Karakteristik alga merah yang menempel pada akar mangrove yaitu bentuk talus silindris dan menyerupai daun (blade), percabangan dikotom atau monopodial dengan sel polysiphonous..Kata Kunci: Alga merah, Hutan Mangrove, Lingkungan AbstractRed algae are Thallophyta that generally grow attached to certain substrates such as in coral, mud, sand, and other hard objects. One of them is attached to the mangrove which is a highly nutritious area. One of the forests that have mangrove forest is quite wide is Serewe Village, Jerowaru District East Lombok. This study aims to determine the diversity of species and red algae characteristics found in mangrove root. Sampling at four stations using purposive sampling method and roaming at low tide. The distance of sampling is 800m at each station. Based on the results of the study of red algae obtained as many as 11 species, namely 4 species of the genus Bostrychia, 3 species of genus Caloglassa, 2 species of genus Catenella, 1 species of genus Gelidium, 1 species of genus Stictosiphonia. Characteristics of red algae attached to mangrove root that forms cylindrical thallus and has branching leaf (blade) dichotomy or monopodial with polysiphonous cells.Keyword :Red Algae, Mangrove Forest and Environment.

scholarly journals Root sampling by plastic pin net method

Root Research ◽  
2020 ◽  
Vol 29 (4) ◽  
pp. 84-85
Author(s):  
Akimasa NAKANO ◽  
Heikurou TAKAMIZAWA
Keyword(s):  
Net Method ◽  
Root Sampling

INSECT PESTS OF CARROTS IN ORGANIC SOILS OF SOUTHWESTERN QUEBEC WITH SPECIAL REFERENCE TO THE CARROT WEEVIL, LISTRONOTUS OREGONENSIS (COLEOPTERA: CURCULIONIDAE)

1971 ◽  
Vol 103 (10) ◽  
pp. 1441-1448 ◽  
Author(s):  
J. P. Perron
Keyword(s):  
Sampling Method ◽  
Insect Pests ◽  
Light Trap ◽  
Organic Soil ◽  
Organic Soils ◽  
Psila Rosae ◽  
Listronotus Oregonensis ◽  
Root Sampling ◽  
Carrot Weevil ◽  
First Time

AbstractA survey of the insect pests of carrots was conducted in the organic soils of southwestern Quebec with a view to establishing the presence of the carrot weevil, Listronotus oregonensis (Lec.), in this province as well as to confirm the importance of other pests damaging carrot crops. Four different methods were used to capture adults, and the root sampling method was used for establishing larval populations.The carrot weevil was captured by light trap for the first time in Quebec on 1 June 1967, but was neither recognized nor identified until June 1970 when a few specimens were obtained again by light trap set at Ste. Clotilde and by colour traps placed in the experimental fields used for the survey in 1970. Damage caused by this new pest on carrots ranged from 2.0% to 22.0% root injuries throughout the carrot growing areas of the organic soil regions of Sherrington, St. Michel, and Ste. Clotilde representing several thousands of acres. The carrot rust fly, Psila rosae (F.), was the only other carrot pest captured, but has been found to be of no importance in these areas.

Radial mass analysis of unstained STEM images of molluscan hemocyanins

1990 ◽  
Vol 48 (3) ◽  
pp. 810-811
Author(s):  
M.G. Hamilton ◽  
T.T. Herskovits ◽  
J.S. Wall
Keyword(s):  
Image Analysis ◽  
Hollow Cylinder ◽  
Electron Micrographs ◽  
Side View ◽  
Mass Analysis ◽  
Mass Measurements ◽  
Electron Microscopic ◽  
Transmission Electron ◽  
Transmission Electron Microscopic ◽  
Microscopic Studies

The hemocyanins of molluscs are aggregates of a cylindrical decameric subparticle that assembles into di-, tri-, tetra-, penta-, and larger multi-decameric particles with masses that are multiples of the 4.4 Md decamer. Electron micrographs of these hemocyanins typically show the particles with two profiles: circular representing the cylinder viewed from the end and rectangular representing the side-view of the hollow cylinder.The model proposed by Mellema and Klug from image analysis of a didecameric hemocyanin with the two decamers facing one another with collar (closed) ends outward fits the appearance of side-views of the negatively-stained cylinders. These authors also suggested that there might be caps at the ends. In one of a series of transmission electron microscopic studies of molluscan hemocyanins, Siezen and Van Bruggen supported the Mellema-Klug model, but stated that they had never observed a cap component. With STEM we have tested the end cap hypothesis by direct mass measurements across the end-views of unstained particles.

An Empirical Analysis of the Obtrusiveness of and Participants' Compliance with the Electronically Activated Recorder (EAR)

2007 ◽  
Vol 23 (4) ◽  
pp. 248-257 ◽  
Author(s):  
Matthias R. Mehl ◽  
Shannon E. Holleran
Keyword(s):  
Empirical Analysis ◽  
Sampling Method ◽  
Daily Life ◽  
Assessment Method ◽  
Data Confidentiality ◽  
Short Term ◽  
Naturally Occurring ◽  
Two Samples ◽  
Audio Recorder ◽  
Term Monitoring

Abstract. In this article, the authors provide an empirical analysis of the obtrusiveness of and participants' compliance with a relatively new psychological ambulatory assessment method, called the electronically activated recorder or EAR. The EAR is a modified portable audio-recorder that periodically records snippets of ambient sounds from participants' daily environments. In tracking moment-to-moment ambient sounds, the EAR yields an acoustic log of a person's day as it unfolds. As a naturalistic observation sampling method, it provides an observer's account of daily life and is optimized for the assessment of audible aspects of participants' naturally-occurring social behaviors and interactions. Measures of self-reported and behaviorally-assessed EAR obtrusiveness and compliance were analyzed in two samples. After an initial 2-h period of relative obtrusiveness, participants habituated to wearing the EAR and perceived it as fairly unobtrusive both in a short-term (2 days, N = 96) and a longer-term (10-11 days, N = 11) monitoring. Compliance with the method was high both during the short-term and longer-term monitoring. Somewhat reduced compliance was identified over the weekend; this effect appears to be specific to student populations. Important privacy and data confidentiality considerations around the EAR method are discussed.

Emotional Variability Predicts Tiredness in Daily Life

2016 ◽  
Vol 37 (3) ◽  
pp. 181-193 ◽  
Author(s):  
Aire Mill ◽  
Anu Realo ◽  
Jüri Allik
Keyword(s):  
Sampling Method ◽  
Daily Life ◽  
Emotional Experience ◽  
Experience Sampling ◽  
Experience Sampling Method ◽  
Building Blocks ◽  
Intraindividual Variability ◽  
Unique Role ◽  
Over Time

Abstract. Intraindividual variability, along with the more frequently studied between-person variability, has been argued to be one of the basic building blocks of emotional experience. The aim of the current study is to examine whether intraindividual variability in affect predicts tiredness in daily life. Intraindividual variability in affect was studied with the experience sampling method in a group of 110 participants (aged between 19 and 84 years) during 14 consecutive days on seven randomly determined occasions per day. The results suggest that affect variability is a stable construct over time and situations. Our findings also demonstrate that intraindividual variability in affect has a unique role in predicting increased levels of tiredness at the momentary level as well at the level of individuals.

Monitoring Daily Life Using Mobile Phones: The Experience Sampling Method

2006 ◽  
Author(s):  
Alessandra Preziosa ◽  
Marta Bassi ◽  
Daniela Villani ◽  
Andrea Gaggioli ◽  
Giuseppe Riva
Keyword(s):  
Mobile Phones ◽  
Sampling Method ◽  
Daily Life ◽  
Experience Sampling ◽  
Experience Sampling Method

Effects of sex, age and sampling method on plasma corticosterone levels in mice

2007 ◽  
Vol 115 (S 1) ◽  
Author(s):  
M Bielohuby ◽  
M Bidlingmaier ◽  
C Maser-Gluth ◽  
I Renner-Mueller ◽  
E Wolf ◽  
...  
Keyword(s):  
Sampling Method ◽  
Plasma Corticosterone
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