Typhoon Haiyan caused widespread damage in the Philippines. Funds are being raised to help provide relief and support to those affected by the powerful storm. Donations will aid victims who lost homes and property due to the destruction caused by Typhoon Haiyan.
This study investigated the impact of dust deposition on photovoltaic panel performance by comparing the I-V curves of identical panels with and without dust under indoor and outdoor conditions. Indoor testing found dust reduced short circuit current by 30-40% and power output by 45-55%, while outdoor testing found reductions of 4-5% in current and 5-6% in power. Both settings found dust did not significantly impact open circuit voltage. The study concluded that dust deposition significantly reduces panel performance and I-V curve analysis can be used to quantify power losses and economic impacts for PV plants from dust accumulation.
This document summarizes research on controlling the morphology of electrodeposited copper thiocyanate (CuSCN) films by varying the applied bias voltage. SEM images show that well-shaped nanorods are deposited at -0.3V, and increasing the voltage causes the nanorods to agglomerate gradually. TEM confirms the nanorod structure. Deposition time also increases nanorod diameter. The CuSCN films were applied in semiconductor sensitized solar cells, achieving a power conversion efficiency of 3.9%.
This document outlines the design of a solar-powered lamp intended for student study purposes in India. It describes the product, light, electrical, and solar panel designs. The lamp is designed to provide sufficient light for studying (250 lux) using a 0.5 watt LED powered by a 1 watt solar panel and 1200 mAh battery. The electrical system was modeled to power the LED for 6-7 hours per day. The overall design aims to enable students' education through a reliable light source powered by clean solar energy.
Typhoon Haiyan caused widespread damage in the Philippines. Funds are being raised to help provide relief and support to those affected by the powerful storm. Donations will aid victims who lost homes and property due to the destruction caused by Typhoon Haiyan.
This study investigated the impact of dust deposition on photovoltaic panel performance by comparing the I-V curves of identical panels with and without dust under indoor and outdoor conditions. Indoor testing found dust reduced short circuit current by 30-40% and power output by 45-55%, while outdoor testing found reductions of 4-5% in current and 5-6% in power. Both settings found dust did not significantly impact open circuit voltage. The study concluded that dust deposition significantly reduces panel performance and I-V curve analysis can be used to quantify power losses and economic impacts for PV plants from dust accumulation.
This document summarizes research on controlling the morphology of electrodeposited copper thiocyanate (CuSCN) films by varying the applied bias voltage. SEM images show that well-shaped nanorods are deposited at -0.3V, and increasing the voltage causes the nanorods to agglomerate gradually. TEM confirms the nanorod structure. Deposition time also increases nanorod diameter. The CuSCN films were applied in semiconductor sensitized solar cells, achieving a power conversion efficiency of 3.9%.
This document outlines the design of a solar-powered lamp intended for student study purposes in India. It describes the product, light, electrical, and solar panel designs. The lamp is designed to provide sufficient light for studying (250 lux) using a 0.5 watt LED powered by a 1 watt solar panel and 1200 mAh battery. The electrical system was modeled to power the LED for 6-7 hours per day. The overall design aims to enable students' education through a reliable light source powered by clean solar energy.
Kickstarter and its alternatives: How to choose the right platform for YOUR c...Elena Mikhaylova
How to choose a platform for a crowdfunding project.
Different types of crowd funding websites.
How to compare different platforms: example - Kickstarter vs. Indiegogo
The document discusses doing business in Russia. It provides an overview of the Russian market, including its geography, demographics, and economy. Key points include that Russia has a population of 143 million and is the largest country in the world by area. It also has a growing economy and consumer market. The document then discusses considerations for doing business in Russia, such as visa requirements, notary services, and the application process for business visas. It highlights trade relationships with the UK and opportunities across key industries in Russia. Challenges of the Russian market are also noted, as well as the benefits of the growing Customs Union with Belarus and Kazakhstan.
Preparing, Diluting of solutions of different Strengths & safety measures whi...Ekta Belwal
This document provides guidance on weighing and preparing solutions of different concentrations and their dilution, as well as handling techniques for solutions. It discusses solutions, measuring chemicals, different chemical concentrations, dilution of stock solutions, labeling, safety, and conclusions. Specifically, it defines types of solutions, provides procedures for preparing solutions by weighing solids or liquids and dilution, discusses units for reporting concentration like molarity and normality, and guidelines for proper labeling, storage, safety practices, and documentation when working with chemical solutions in the lab.
Guia de asesoramiento astrologico-Dr Bernard RosemblumTucu Marc
La Unión Europea ha anunciado nuevas sanciones contra Rusia por su invasión de Ucrania. Las sanciones incluyen prohibiciones de viaje y congelamiento de activos para más funcionarios rusos, así como restricciones a las importaciones de productos rusos de acero y tecnología. Los líderes de la UE esperan que estas medidas adicionales aumenten la presión económica sobre Rusia y la disuadan de continuar su guerra contra Ucrania.
Kickstarter and its alternatives: How to choose the right platform for YOUR c...Elena Mikhaylova
How to choose a platform for a crowdfunding project.
Different types of crowd funding websites.
How to compare different platforms: example - Kickstarter vs. Indiegogo
The document discusses doing business in Russia. It provides an overview of the Russian market, including its geography, demographics, and economy. Key points include that Russia has a population of 143 million and is the largest country in the world by area. It also has a growing economy and consumer market. The document then discusses considerations for doing business in Russia, such as visa requirements, notary services, and the application process for business visas. It highlights trade relationships with the UK and opportunities across key industries in Russia. Challenges of the Russian market are also noted, as well as the benefits of the growing Customs Union with Belarus and Kazakhstan.
Preparing, Diluting of solutions of different Strengths & safety measures whi...Ekta Belwal
This document provides guidance on weighing and preparing solutions of different concentrations and their dilution, as well as handling techniques for solutions. It discusses solutions, measuring chemicals, different chemical concentrations, dilution of stock solutions, labeling, safety, and conclusions. Specifically, it defines types of solutions, provides procedures for preparing solutions by weighing solids or liquids and dilution, discusses units for reporting concentration like molarity and normality, and guidelines for proper labeling, storage, safety practices, and documentation when working with chemical solutions in the lab.
Guia de asesoramiento astrologico-Dr Bernard RosemblumTucu Marc
La Unión Europea ha anunciado nuevas sanciones contra Rusia por su invasión de Ucrania. Las sanciones incluyen prohibiciones de viaje y congelamiento de activos para más funcionarios rusos, así como restricciones a las importaciones de productos rusos de acero y tecnología. Los líderes de la UE esperan que estas medidas adicionales aumenten la presión económica sobre Rusia y la disuadan de continuar su guerra contra Ucrania.
1. Nova York (en anglès i oficialment New York City) és la ciutat més poblada de l'estat de Nova York,
als Estats Units d'Amèrica, i la segona aglomeració urbana del continent. És el centre de l'àrea
metropolitana de Nova York, la qual està entre les aglomeracions urbanes més grans del món. [2] Durant
més d'un segle ha estat un dels principals centres mundials de comerç i finances. Hom considera Nova
York una ciutat global a causa de les seves influències a escala mundial en els mitjans de comunicació,
en la política, en l'educació, en l'entreteniment i en la moda. La influència artística i cultural de la ciutat és
de les més fortes del país; a més a més, s'hi troba la Seu de les Nacions Unides, la qual cosa la
converteix en un important punt de relacions internacionals.
La ciutat la formen cinc boroughs (mot a vegades traduït per districtes o comunes), cadascun dels quals
coincideix amb un comtat: el Bronx, Brooklyn, Manhattan, Queens i Staten Island. Hi viuen més de 8,4
milions de novaiorquesos en una àrea urbana de 830km 2: és la segona ciutat més densa dels Estats
Units, per darrere d'Union City (Nova Jersey), Nova Jersey, situada a l'altra banda del riu Hudson.
La ciutat té molts barris i edificis reconeguts per tot el món, com per exemple l'estàtua de la Llibertat,
ubicada a laLiberty Island, o l'Ellis Island, la petita illa per on van entrar als Estats Units milions
d'immigrants que hi arribaren a finals del segle XIX i començaments del XX. Wall Street ha estat un dels
principals centres globals de finances des de la Segona Guerra Mundial i és la seu de la borsa de Nova
York. La ciutat també ha concentrat molts dels edificis més alts del món, entre els quals hi ha l'Empire
State, anteriorment, les Torres Bessones del World Trade Center, caigudes després dels atemptats de l'11
de setembre del 2001.
Nova York també és el bressol de molts moviments culturals nord-americans, com per exemple
el renaixement de Harlem en literatura i arts visuals, l'expressionisme abstracte (també conegut com
a Escola de Nova York) en pintura, i el hip hop, el punk rock i Tin Pan Alley en música. El 2005 es
parlaven gairebé 170 idiomes a la ciutat i el 36% de la població havia nascut fora dels Estats
Units. El metro hi funciona les 24 hores del dia i el moviment constant de trànsic i gent, Nova York és
coneguda com «la ciutat que mai no dorm».