Minggu, 16 Oktober 2011

mathematics or history

As they move students to advanced classes at the university and to study a BA in English, computer science, mathematics or history, must have advanced reading skills are required to read at higher levels. Learn how you need to understand the new materials and complex active reading. Students can benefit from active reading through the installation of five basic skills of reading comprehension.

Read actively engages in a conscious focus on what you are reading. You should have what you’re reading as you read think about. That means you must read slowly and carefully, to understand the content. This sometimes requires re-reading the material, especially if there is new information or particularly complex matter. The five strategies that can help with active reading, described in this article.

The first strategy for active reading is to ask questions. Make internal questions are important before, during and after reading helps to understand the material. The study will help measure how much and what do you understand what you are reading. Before reading, make sure you have no prior knowledge on the subject. Then ask yourself two important questions: What new information will be included in this reading? As new information is organized?

As you read what the author wants you to know, approach. Consider the importance of what you are reading.

the construction

Adult Life

The ringing of his cell-derived adult instead of a newborn adult working, does not clean his cell birth and then launch the new care laid eggs and larvae, but is the worker bees to feed. As an adult never eats buzz throughout their lives and never goes out looking for nectar or pollen, or the construction of the hive.

The role of unmanned aircraft in a lifetime is to find a queen without a trailer and pass on their genes. Drones once their wings are strong enough for daily flights out of pairing, hoping to find a partner.

A drone’s eyes are much larger than a worker bee, which helps you tune your aim in her nuptial flight. He also has a larger body with belly fat, the latter, of course, maintained by his sisters work hard ..

Since the worker bee sting is a modified ovipositor (an organ that egg laying), the drones are, in contrast to the female worker bees do not defend the hive.

Death

As a result of his comfortable life of a drone up to 90 days, compared with 42 days of an employee. However, the buzz of luck in love, he will never return to their prey, but to die on the wing, like the penis and threw it down with the stomach tissue of the body during mating.

All drones still alive in the hive in late fall is not allowed to see his days in quiet satisfaction. But it is attacked and thrown out of the hive by the workers and left the death, since male bees do not hibernate.

Posted in science | Tags: , , , , , , , , , , , , , ,

herbivore interactions.

Primary hosts of T. evansi are solanaceous crops such as tomatoes, potatoes, snuff, etc. mites puncture the leaves during feeding, causing yellowing or bleaching of leaves. Then the leaves are falling and in the case of severe attack the plant dies. The research study showed that Sarmento T. evansi manipulate host defenses by suppressing the induction of salicylic acid and jasmonic acid signaling pathways involved in defense mechanisms of plants in tomato plants. Salicylic acid and jasmonic acid play a crucial role in immunity of plants. Mites reduce the amount of inducible defense compounds and volatile substances (eg, protease inhibitors), which play a crucial role in plant defense. Control of pathogens affecting these crops is an important area of ​​research. The result of research by Sarmento allows a better understanding of plant-herbivore interactions. Opens the door to new research in two directions:

* Biological control of Tetranychus evansi at an affordable price to the farmer.
* Development of varieties in a position to fight against the manipulations of herbivores.

Reference:

[1] Sarmento R, Lemos F et al. A herbivore, the plant defense manipulated. Ecol Lett. 14 March 2011 (3): 229-236.

Anna Purna is a freelancer, writing articles about your favorite interest of health and nutrition.

Posted in science | Tags: , , , , , , , , , , , , , ,

Andromeda Galaxy

Images of the universe attracts the attention of young and old. Among the tens of thousands of images of the universe, that the best pictures from space? On the basis of attractiveness, popularity and awe factor, there are three types of images of the universe, which are considered the most beautiful place pictures of all time: -

Images of nebulae in the universe

Not only external causes, such as curiosity and interest in the satellite images, as images of nebulae. The nebula is a vast collection of cosmic dust, and plasma gas such as hydrogen, helium, etc. They are attractive forms vaguely resemble mythical creatures, insects, insects, animals and even abstract art. Helix Nebula is an uncanny resemblance to a giant eye in the sky. People call this place the big picture, “The Eye of God.”

It is interesting to note that some of the most incredible images of Space Nebula “Pillars of Creation”, “Eye of God”, “Orion Nebula”, “Crab Nebula”, “Heart and Soul Nebula”, “Eagle Nebula”, ” Walk with your head missing, “” Ant Nebula “,” Butterfly Nebula “,” Lagoon Nebula “and others.

Images of the galaxies in the universe

Galaxy huge collection of galaxies and the different types of celestial bodies that gravity tied to an individual. Most galaxies contain billions and even trillions of stars, planets and other celestial bodies. They also contain, cosmic dust, gases and other components.

Images of the Sombrero galaxy, the Andromeda Galaxy, Whirlpool Galaxy, etc. Some of the most exciting images of galaxy space.

Sometimes a galaxy of meetings and interaction with another galaxy. In this interaction, the more the galaxy of stars in our galaxy and other, smaller, and about one billion years or more reduces the two galaxies merge into one large galaxy. Images of colliding galaxies is one of the best photos of the room. An example of a clash of colliding galaxies NGC 2207 and IC-2163 spiral galaxies.

Photos of rare astronomical phenomena of the universe, etc. ..

This type of photography includes images of the universe are rare astronomical phenomena such as exploding stars, comets, which is every few hundred years, historical astronomy pictures, astronomy photos of the newest discoveries and much more.

asteroids

I was amazed to see how small the planet, and made great and the conference was to answer this question 30 minutes have passed. Then someone asked: “How do asteroids, meteorites and comets are formed?” – Once again, another 30 minutes, so that is almost two times during the initial interview. Then I wondered why?

In fact, I argued that people want to know, want to learn, and very interesting, that is, after all, is that you have read this article? Now the question is answered by specialists from NASA to the formation of planetary science, “minor planets debris Planetary unsold or comet collision?” The answer is often actually the remains of these forces. In the early solar system is believed that the more violent than it is today, and had a large number of collisions.

Later things calmed down, but not without conflict, in essence, is the asteroid belt is a planetary collision or more. Finally, all the garbage that can go together somehow, and then again crash a disorder of dust and asteroids hit each other every day in this region, fighting sometimes sent to the orbit of Earth rocks crossing space, which becomes our problem. Rule, and I heard about this workshop: