Recull de propostes per minimitzar l'impacte negatiu de gènere del sistema de teletreball a l'Ajuntament de Barcelona

Finançat amb el projecte "Impacto de GÉnero del TEletrabajo y rutinas de COnfinamiento: más allá de lo obvio" (Ref. SUPERACOVID19_2.2.IGETECO) i a través de l'Ajuntament de Barcelona pel Servei d'Estudi sobre propostes per minimitzar l'impacte negatiu de gènere del sistema de teletreball a l'Ajuntament de Barcelona (exp.20002682)El present document recull les propostes d'actuació contingues a l'estudi Propostes per minimitzar l'impacte negatiu de gènere del sistema de teletreball a l'Ajuntament de Barcelona realitzat pel Centre d'Estudis Sociològics sobre la Vida Quotidiana i el Treball (QUIT) de la Universitat Autònoma de Barcelona. L'emergència sanitària provocada per la Covid19 i el necessari confinament de la població per combatre la pandèmia ha significat, des del punt de vista de l'organització del treball, un canvi molt important cap a l'impuls de formes de treball a distància. Però aquest impuls del teletreball ha estat una resposta fruit de l'emergència, lògica davant la situació viscuda i, com a tal, no ha pogut ser planificada amb el temps i els mitjans necessaris

Marketingová strategie vybrané kapely

Lubal, J. Marketing strategy of the selected band. Bachelor thesis. Brno: Mendel Uni- versity, 2023. Marketing strategy plays an essential role, not only in the field of ordinary busi- ness, but also in the field of the music industry, where it is thanks to a quality mar- keting strategy that new musical figures are created, who will establish themselves with their work, not only in their city or country, but also thanks to social media and the rapid spread of information all over the world. This bachelor's thesis deals with the first steps in this journey, where the metal band Coincidence from Brno stands as a pattern. With the help of the available literature, the basic specifics, tools and trends are defined in the theoretical part. In practical work, emphasis is placed on consumer behavior, especially in the field of digital music distribution, and on the overall development of the music market in recent years. All this will result in the suggestion of a marketing strategy for this band, after the application of which the number of listeners will increase, which will lead to the monetization of the band's activity

Impact of Heavy Metal Pollution on the Environment

Pollution of the environment by the toxic heavy metals is a global issue of concern and affects the natural quality of the air, water, and soil. Anthropogenic activities are largely responsible for the widespread pollution of heavy metals in the environment, which is having a harmful impact on human health. Rapid urbanization, industrialization, population explosion, and use of advanced technology in developing countries have resulted in huge rise in waste production. Waste generation and disposal along with landfills is a serious global environmental threat resulting in heavy metal contamination of the soils, water, and plants. Heavy metals reaching in the atmosphere result to the deterioration of the quality, and contamination of the soil and groundwater along with damage to the living organisms. The present review describes the analysis of heavy metal pollution of the environment with respect to air, animals, aquatic ecosystem, plants, and soil. Special emphasis is provided on sources of heavy metals in the environment, harmful impacts of heavy metals on the environment and strategies to control heavy metal pollution of the environment. Present study is based on critical review and analysis of scientific information published by academic and professional researchers who studied the impact of heavy metal pollution on the environment. Research articles on impact of heavy metal pollution on the environment published in high impact factor journals were referred for collection of databases. This study notices that there is an urgent need for continuous monitoring of various environmental elements for heavy metals in different open dumpsites. It also recommends that nanomaterials, such as metal oxide nanoparticles, graphene and its derivatives, magnetic nanoparticles, and carbon nanotubes should be used to remove the toxic heavy metals from the air, water and soil

Health Effects of Heavy Metal Contamination in Drinking Water

Water is essential for life, be it the life of animals, plants or human beings. It’s our prime duty to protect, manage and preserve the quality of water. Uncontrolled anthropogenic activities have resulted in contamination of fresh water resources thereby affecting the health of living beings. Rampant industrialization is a major environmental problem on the global scale for the pollution of fresh water with toxic effluents containing heavy metals. Contamination of surface water by heavy metals is the greatest quality issues because of their toxic nature, increased release and negative impact on the health of human beings. Water-borne diseases remain one of the major health concerns in the world. Heavy metals are individual metals and metal compounds that can impact human health. Exposure of humans to metals such as antimony, arsenic, barium, cadmium, chromium, cobalt, copper, iron, lead, manganese, mercury, nickel, selenium, silver, tin, zinc, etc results in chronic and acute toxicities. The toxicity of heavy metals depends on their concentration, period of exposure and route of exposure. Humans are exposed to heavy metals either by inhalation from the atmosphere, intake through drinking water, or by ingestion through the skin by dermal contact. The present review describes the analysis of ‘heavy metal contamination in drinking water’ with reference to definition, sources, health effects on humans and preventive measures. This study suggests that, the best way to get rid of heavy metal contamination in drinking water is to remove toxic heavy metals by using the best water purification system. Also, the ground water resources must be monitored for quality assessment, source identification and bioremediation of heavy metals

Luminescent Sensor Based on Ln(III) Ternary Complexes for NAD(P)H Detection

Ln(III) complexes of macrocyclic ligands are used in medicinal chemistry, for example as contrast agents in MRI or radiopharmaceutical compounds, and in diagnostics using fluorescence imaging. This paper is devoted to a spectroscopic study of Ln(III) ternary complexes consisting of macrocyclic heptadentate DO3A and bidentate 3-isoquinolinate (IQCA) ligands. IQCA serves as an efficient antenna ligand, leading to a higher quantum yield and Stokes shift (250–350 nm for Eu, Tb, Sm, Dy in VIS region, 550–650 nm for Yb, Nd in NIR region). The shielding-quenching effect of NAD(P)H on the luminescence of the Ln(III) ternary complexes was investigated in detail and this phenomenon was utilized for the analytical determination of this compound. This general approach was verified through an enzymatic reaction during which the course of ethanol transformation catalyzed by alcohol-dehydrogenase (ADH) was followed by luminescence spectroscopy. This method can be utilized for selective and sensitive determination of ethanol concentration and/or ADH enzyme activity. This new analytical method can also be used for other enzyme systems coupled with NAD(P)H/NAD(P)+ redox pairs

Colorimetric Chemosensor Array for Determination of Halides

The halide anions are essential for supporting life. Therefore, halide anion analyses are of paramount importance. For this reason, we have performed both qualitative and quantitative ana- lyses of halides (chloride, bromide, iodide) using the Tl(III) complex of azodye, 4-(2-pyridylazo)re- sorcinol (PAR), a potential new chemical reagent/sensor that utilizes the substitution reaction whereas the Tl(III)PAR complex reacts with a halide to yield a more stable thallium(III)-halide while releasing the PAR ligand in a process accompanied by color change of the solution. The experimental conditions (e.g., pH, ratio metal ion-to-ligand ratio, etc.) for the substitution reaction between the metal complex and a halide were optimized to achieve increased sensitivity and a lower limit of detection (chloride 7 mM, bromide 0.15 mM, iodide 0.05 mM). It is demonstrated that this single chemosensor can, due to release of colored PAR ligand and the associated analyte-specific changes in the UV/VIS spectra, be employed for a multicomponent analysis of mixtures of anions (chloride + bromide, chloride + iodide, bromide + iodide). The spectrophotometric data evaluated by artificial neural networks (ANNs) enable distinguishing among the halides and to determine halide species concentrations in a mixture. The Tl(III)-PAR complex was also used to construct sensor arrays utilizing a standard 96-well plate format where the output was recorded at several wavelengths (up to 7) using a conventional plate reader. It is shown that the data obtained using a digital scanner employing only three different input channels may also be successfully used for a subsequent ANN analysis. The results of all approaches utilized for data evaluation were similar. To increase the practical utility of the chemosensor, we have developed a test paper strip indicator useful for routine naked-eye visual determination of halides. This test can also be used for halide anion determination in solutions using densitometer. The methodology described in this paper can be used for a simple, inexpensive, and fast routine analysis both in a laboratory as well as in a field setting

Kinetics and equilibria for complex formation between palladium(II) and chloroacetate

Kinetics and equilibria for the formation of a 1:1 complex between palladium(II) and chloroacetate were studied by spectrophotometric measurements in 1.00 mol . dm(-3) HClO4 at 298.2 K. The equilibrium constant, K, of the reaction Pd2+ + HL reversible arrow PdL+ + H+ was determined from multi-wavelength absorbance measurements of equilibrated solutions at variable temperatures as log(10)K (298.2K) = 0.492 +/- 0.006 with Delta H-o = - 15.6 +/- 1.9 kJ . mol(-1) and Delta S-o = -43.0 +/- 6.3 J . K-1, mol and spectra of individual species were calculated. Variable-temperature kinetic measurements gave rate constants for the forward and backward reactions at 298.2 K and ionic strength 1.00 mol . dm(-3) as k(1) = 6.46 +/- 0.08 dm(3) . mol(-1) . s(-1) and k(-1) = 2.91 +/- 0.03 s(-1), with activation parameters Delta H-1(not equal) = 56.55 +/- 0.75 kJ . mol(-1), Delta S-1(not equal) = -40.0 +/- 2.5 J . K-1 mol(-1), Delta H--1(not equal) = 64.42 +/- 0.50 kJ . mol(-1) and Delta S--1(not equal) = -20.3 +/- 1.7 J . K-1 . mol-1, respectively. From the kinetics of the forward and reverse processes, log(10) K = 0.346 +/- 0.007, Delta H-o = -7.9 +/- 0.9 kJ . mol(-1) and Delta S-o = - 19.8 +/- 3.0 J . K-1 . mol(-1) were derived, and these values are in good agreement with the results of the equilibrium measurements. The Specific Ion Interaction Theory was employed for determination of thermodynamic equilibrium constants for the protonation of chloroacetate (log(10) K-p(o) = 2.857 +/- 0.016) and formation of the PdL+ complex (log(10) K-o = 1.002 +/- 0.046, log(10) beta(o) = 3.859 +/- 0.048). Specific ion interaction coefficients epsilon(L-, Na+) = 0.042 +/- 0.022 kg . mol(-1), epsilon(L-, K+) = 0.081 +/- 0.021 kg . mol(-1), epsilon(PdL+, ClO4-) = 0.92 +/- 0.21 kg . mol(-1) were derived