Optimizing the use of the PHYTOTOXKIT test to assess the toxicity of soil contaminated with creosote

Soil phytotoxicity studies were performed with different doses of creosote by means of the PHYTOTOXKIT test, using Sinapis alba, Lepidium sativum, Sorghum saccharatum as test plants. The obtained results indicate highly signifiant effect of the creosote dose, duration of soil incubation, type of test plant and period, after which the root length measurement was performed during the phytotoxicity index root test. The analysis of results indicates the highest sensitivity of Sorghum saccharatum to creosote and the highest correlation of results obtained with the aid of Lepidium sativum when measuring the root length after the fist day the seeds are lined with the size of the dose. The proposed mathematical model makes it possible to predict the reaction of test plants on the size of creosote dose as well as to assess its amount in the soil based on the root phytotoxicity. These results allow for a signifiant simplifiation of the test and shorten its duration. This allows the modifid test to be used for simple monitoring of not only the phytotoxicity but also the creosote residues during reclamation of contaminated soil.<br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" />

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Las instituciones de la RED ante la pandemia

Revista Mexicana de Bachillerato a Distancia ◽

10.22201/cuaed.20074751e.2020.24.76823 ◽

2020 ◽

Vol 12 (24) ◽

Author(s):

Chadwick Carreto Arellano ◽

Verónica Fabiola Torres Chávez ◽

Felicidad del Socorro Bonilla Gómez ◽

Ángel López Martínez ◽

Rosario Lucero Cavazos Salazar ◽

...

Keyword(s):

White Space ◽

Font Size ◽

Stroke Width ◽

Educación A Distancia ◽

La Red

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El Juego de Baricco

Revista Mexicana de Bachillerato a Distancia ◽

10.22201/cuaed.20074751e.2020.24.76822 ◽

2020 ◽

Vol 12 (24) ◽

Author(s):

Rafael Morales

Keyword(s):

White Space ◽

Font Size ◽

Stroke Width ◽

Siglo Xx

<span style="color: #533200; font-family: Montserrat; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">Se hace una reseña del libro <em style="box-sizing: border-box; color: #533200; font-family: Montserrat; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">The Game<span style="color: #533200; font-family: Montserrat; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;"> de Alessandro Baricco (2019), en el cual el autor ofrece una explicación de la Revolución Digital como producto de una insurrección contra la cultura que llevó a los horrores del siglo XX y a la amenaza de desaparición de la humanidad. Se hace una breve presentación de las ideas de Baricco, así como de las implicaciones que observa para la escuela.

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Phytotoxicity of Tires Evaluated in Simulated Conditions

Environments ◽

10.3390/environments8060049 ◽

2021 ◽

Vol 8 (6) ◽

pp. 49

Author(s):

Markéta Šourková ◽

Dana Adamcová ◽

Jan Winkler ◽

Magdalena Daria Vaverková

Keyword(s):

Higher Plants ◽

Sinapis Alba ◽

Lepidium Sativum ◽

Root Growth Inhibition ◽

Chemical Parameters ◽

Sinapis Alba L ◽

Test Kit ◽

Physical And Chemical ◽

Aqueous Leachate ◽

Lepidium Sativum L

Illegal dumps and landfills with disposed of tires are a fact of today, which should not be neglected as they represent a great ecological burden for the environment, affect the surrounding nature and disturb the landscape. This research was focused on testing the phytotoxicity of aqueous leachates from the fractions of tires in two sets of experiments—to simulate laboratory conditions (tire leaching in distilled water) and natural conditions (tire leaching in water from a recipient) using the Phytotoxkit testing kit (kit for the establishment of inhibition/stimulation effect on the root development) and the watercress test of phytotoxicity (biological method for the assessment of leachate phytotoxicity). Plants whose seeds were selected for the test were watercress (Lepidium sativum L.) and white mustard (Sinapis alba L.). The aqueous leachate was tested for 38 weeks. During the experiment, physical and chemical parameters were measured at intervals of 14 days by the testing instrument HACH TEST KIT: electric conductivity (EC), amount of dissolved oxygen (LDO) and pH. Results of root growth inhibition (IR) on the seeds of Lepidium sativum L. and Sinapis alba L. exhibited values ranging from 11.73% to 47.74% in the tested samples. Results of germination index (GI) on the seeds of Lepidium sativum L. exhibited values below 66% in the tested samples, which indicated the leachate phytotoxicity. In spite of the fact that similar studies are tackling the acute toxicity of leachates from tires (particularly to algae, embryos and animals), this research brings complementary information in testing the acute phytotoxicity of tire leachates to higher plants.

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Role of Autochthonous Filamentous Fungi in Bioremediation of a Soil Historically Contaminated with Aromatic Hydrocarbons

Applied and Environmental Microbiology ◽

10.1128/aem.72.1.28-36.2006 ◽

2006 ◽

Vol 72 (1) ◽

pp. 28-36 ◽

Cited By ~ 98

Author(s):

A. D'Annibale ◽

F. Rosetto ◽

V. Leonardi ◽

F. Federici ◽

M. Petruccioli

Keyword(s):

Aromatic Hydrocarbons ◽

Contaminated Soil ◽

Chloride Ions ◽

Lepidium Sativum ◽

Fungal Colonization ◽

Soil Toxicity ◽

Germination Test ◽

Lignin Peroxidases ◽

Ph Conditions

ABSTRACT Nine fungal strains isolated from an aged and heavily contaminated soil were identified and screened to assess their degradative potential. Among them, Allescheriella sp. strain DABAC 1, Stachybotrys sp. strain DABAC 3, and Phlebia sp. strain DABAC 9 were selected for remediation trials on the basis of Poly R-478 decolorization associated with lignin-modifying enzyme (LME) production. These autochthonous fungi were tested for the abilities to grow under nonsterile conditions and to degrade various aromatic hydrocarbons in the same contaminated soil. After 30 days, fungal colonization was clearly visible and was confirmed by ergosterol determination. In spite of subalkaline pH conditions and the presence of heavy metals, the autochthonous fungi produced laccase and Mn and lignin peroxidases. No LME activities were detected in control microcosms. All of the isolates led to a marked removal of naphthalene, dichloroaniline isomers, o-hydroxybiphenyl, and 1,1′-binaphthalene. Stachybotrys sp. strain DABAC 3 was the most effective isolate due to its ability to partially deplete the predominant contaminants 9,10-anthracenedione and 7H-benz[DE]anthracen-7-one. A release of chloride ions was observed in soil treated with either Allescheriella sp. strain DABAC 1 or Stachybotrys sp. strain DABAC 3, suggesting the occurrence of oxidative dehalogenation. The autochthonous fungi led to a significant decrease in soil toxicity, as assessed by both the Lepidium sativum L. germination test and the Collembola mortality test.

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Analytical and experimental discussion of a circuit-based model for compact fluorescent lamps in a 60Hz power grid

Ingeniería e Investigación ◽

10.15446/ing.investig.v35n1sup.53618 ◽

2015 ◽

Vol 35 (1Sup) ◽

pp. 89-97 ◽

Cited By ~ 2

Author(s):

Gabriel Alexis Malagon ◽

Jeisson Bello Peña ◽

Gabriel Ordóñez Plata ◽

Cesar Duarte Gualdrón

Keyword(s):

Scientific Literature ◽

Power Grid ◽

Research Work ◽

Power Grids ◽

Voltage Source ◽

Electrical System ◽

Font Size ◽

Stroke Width ◽

Fluorescent Lamps ◽

Compact Fluorescent Lamps

This article presents an analysis and discussion on the performance of a circuit-based model for Compact Fluorescent Lamps (CFL) in a 120V 60Hz power grid. This model is proposed and validated in previous scientific literature for CFLs in 230V 50Hz systems. Nevertheless, the derivation of this model is not straightforward to follow and its performance in 120V 60Hz systems is a matter of research work. In this paper, the analytical derivation of this CFL model is presented in detail and its performance is discussed when predicting the current of a CFL designed to operate in a 120V 60Hz electrical system. The derived model is separately implemented in both MATLAB® and ATP-EMTP® software using two different sets of parameters previously proposed for 230V 50Hz CFLs. These simulation results are compared against laboratory measurements using a programmable AC voltage source. The measurements and simulations considered seven CFLs 110/127V 60Hz with different power ratings supplied by a sinusoidal (not distorted) voltage source. The simulations under these conditions do not properly predict the current measurements and therefore the set of parameters and/or the model itself need to be adjusted for 120V 60Hz power grids.<br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" />

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Investigations of Latrine Coverage and Associated Factors Among Debretabor Town, Amhara Region North West Ethiopia

International Journal of Public Health Science (IJPHS) ◽

10.11591/ijphs.v5i2.4777 ◽

2016 ◽

Vol 5 (2) ◽

pp. 137

Author(s):

Yilkal Tafere ◽

Mirkuzie Woldie ◽

Henok Assefa

Keyword(s):

Associated Factors ◽

Statistical Significance ◽

Educational Status ◽

Background Color ◽

White Space ◽

Font Size ◽

Amhara Region ◽

Important Indicator ◽

Stroke Width ◽

Model Family

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Adaçayı ve Dağ Çayında Tuz Stresi Üzerine Selenyum Uygulamalarının Etkileri

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v7isp2.29-35.3098 ◽

2019 ◽

Vol 7 (sp2) ◽

pp. 29

Author(s):

Mahmut Çamlıca ◽

Gülsüm Yaldız ◽

Ferit Özen ◽

Abdurrahman Başol ◽

Halit Aşkın

Keyword(s):

Plant Height ◽

Root Length ◽

Root Weight ◽

Fresh Leaf ◽

Leaf Weight ◽

Number Of Leaves ◽

Shoot Weight ◽

Different Doses ◽

Number Of Branches ◽

Fresh Root

Sage and mountain sage belong to Lamiaceae family which have commercial importance from medicinal and aromatic plants in Turkey. The aim of this study was to evaluate the effects of different doses of selenium in salinity conditions on the morphological characteristics of sage (Salvia officinalis L.) and mountain tea (Sideritis sp.). Four different doses of selenium (5, 10, 20, 40 mg/l) were applied in without salinity (0) and salinity (250 mM NaCl/l) medium. The experiment was carried out in the split plot design with three replications in the climate chamber room of the department of field crops. When the examined properties were evaluated; plant height changed between 15.56-23.85 cm, number of branches 10.50-12.78 number/plant, number of leaves 52.78-92.00 number/plant, fresh leaf weight 2.48-7.51 g/plant, dry leaf weight 0.48-3.32 g/plant, fresh root weight 1.52-7.16 g/plant, dry root weight 0.19-1.24 g/plant, root length 26.18-36.07 cm, fresh shoot weight of 1.13-7.15 g/plant and dry shoot weight 0.13-0.38 g/plant. In mountain tea, the properties were determined for plant height as 3.26-5.93 cm, for number of branches as 2.50-6.33 number/plant, for number of leaves as 28.22-91.14 number/plant, for fresh and dry leaf weights as 2.42-11,03 and 0.45-1.91 g/plant, for fresh and dry root weights as 0.71-3.97 and 0.18-0.74 g/plant, for root length as 14.78-33.26 cm, for fresh and dry shoot weights as 0.29-2.28 and 0.12-0.41 g/plant were determined. As a result of this study, 5 mg/l selenium application in salinity conditions in both plants has reached high values in terms of fresh leaf weights. In addition to this, it was found that selenium applications in salinity conditions had positive effects on dry leaf weight in sage and fresh root and fresh shoot weights in mountain tea. As a result of correlation analysis, positive correlations were found between dry leaf weight and other characteristics especially in mountain tea in terms of traits examined in both plants.

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Sleep Habits and Occurrence of Lowback Pain among Craftsmen

International Journal of Public Health Science (IJPHS) ◽

10.11591/ijphs.v3i2.4681 ◽

2014 ◽

Vol 3 (2) ◽

pp. 101

Author(s):

Gabriel Omoniyi Ayeni ◽

Oladire Olaniyi ◽

Oluwasegun A Ayeni

Keyword(s):

Background Color ◽

White Space ◽

Font Size ◽

Sleep Habits ◽

Chi Square ◽

Cross Sectional ◽

Study Objective ◽

Stroke Width ◽

Sleeping Habits ◽

Lowback Pain

<span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">Low back pain (LBP) is a leading cause of disability with high economic <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">and public health consequences. The study objective is to determine the <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">association between sleeping habits and occurrence of lowback pain <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">among craftsmen in Owerri. From April to May, 2012, a cross-sectional <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">survey of randomly selected 500 craft workers was done. Data on sociodemographic characteristics and selected lifestyle were collected using an interviewer semi-structured questionnaire. Data analysis was done using descriptive, inferential statistics of chi square and multiple <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">regressions. The findings of multiple regression analyses showed respondents who sleep on soft/saggy surface were almost 5 times more <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">likely to develop LBP independently compared to those with relatively <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">firm/hard surface (OR = 4.56; CI = 2.62 - 7.94; p = 0.001). Craftsmen<br style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;" /><span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">with unsteady sleeping posture were twice likely to develop LBP (OR=2.10, CI = 1.04 - 4.25, p<0.001). Longitudinal study is warranted <span style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">to further explore the relationship between sleep habits and lowback pain.

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Organización para la vida: Relaciones recíprocas en las ventas ambulantes josefias desde la perspectiva de la economía popular

Cuadernos de Antropología ◽

10.15517/cat.v24i2.17703 ◽

2014 ◽

Vol 24 (2) ◽

pp. 73

Author(s):

Nancy Solís

Keyword(s):

White Space ◽

Font Size ◽

Stroke Width ◽

Normal Line

Partiendo del concepto de economía popular, este trabajo pretende acercar al lector a la cotidianidad de los vendedores y vendedoras ambulantes josefios, esbozando el ambiente de la venta ambulante y defiiendo las estructuras organizadas alrededor de esta actividad. La convivencia, la recolección de relatos y una revisión de su memoria histórica permitieron concluir que las ventas ambulantes no son solamente una alternativa de sustento ante las condiciones excluyentes de la formalidad. Es un ofiio heredado que se disfruta muchas veces y permanece a pesar de las duras circunstancias en las calles del San José caóticamente ordenado.<br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" />

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Perbanyakan dan Aplikasi PGPR (Plant Growth Promoting Rhizobactheria) di Laboratorium Pengamatan Hama dan Penyakit Banyumas

Proceedings Series on Physical & Formal Sciences ◽

10.30595/pspfs.v2i.190 ◽

2021 ◽

Vol 2 ◽

pp. 234-239

Author(s):

Nada Kholifah ◽

Ardiana Kartika B ◽

Teguh Pribadi

Keyword(s):

Plant Growth ◽

Plant Height ◽

Root Length ◽

Dry Weight ◽

Test Plant ◽

Plant Growth Promoting ◽

Wet Weight ◽

Number Of Leaves ◽

Growth Promoting ◽

Test Plants

PGPR (Plant Growth Promoting Rhizobacteria) is a substance that helps plant growth with the help of rhizosphere microorganisms. PGPR propagation can be done with liquid media. This PGPR propagation needs to be done because this substance has many benefits for agricultural cultivation. The application of PGPR to the test plant, namely the pakcoy plant, proved that there was an effect of giving PGPR to the plant. Observations on the test plants were carried out by observing several observation variables such as plant height, root length, number of leaves, wet weight and dry weight. The results of these observations showed that the effect on the test plants was seen in the variables of root length, wet weight, and dry weight. Meanwhile, the variable plant height and number of leaves did not show a visible difference.

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