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Kill The Hunger

Posted by Juan on June 29, 2014 with Comments Closed

In the cradle of hunger hunger kill my child was. With blood of onion you nursing. Miguel Hernandez. You can alleviate the hunger in the countries of third world currently are fashionable voices tinged Malthusian which puts in doubt the survival of planet Earth by lack of food, and that this is going to perish in short space of time by lack thereof, due to an excess of world population. However, hear fewer voices that denounce the agrarian policy of the countries richest which penalizes certain food productions, others controlled by monopolies, and finally prevent poor countries having access to modern production techniques. The European Union itself is covered with glory to encourage the set-aside of land and subsidize its cultivation or support with strong quantities per hectare to those lands which leave from being agricultural; the boot of vineyards, raw material without thinking that with the grape juice you can feed a lot of people; also fosters citrus startup, without thinking it contain a lot of vitamins; also their destruction is short so that the price is not reduced below a certain level.

By what refers to cereals, dried fruits, rapeseed, maize, sunflower, etc., you are encouraged its cultivation being the EU deficit in such products, but not has been designed to encourage the production of olive oil in the producer countries, such as Spain, Italy, Greece and Portugal. Really, where the absurdities of the European policies are most noticeable is in the subject of milk, because it is giving priority to the sacrifice of cows producing and preventing that surpluses are transformed into dust and distributed where most lack do. Here is the current dilemma: a part we are told that there is hunger in poor countries and another foster policies that tend to produce less food. It seems as if the richest countries were committed to ending poverty, ending with the poor. Experts believe that even if the soils are not good quality can alleviate hunger in third world countries using means of modern crops and improved seeds, along with the promotion of new lands for irrigation and a range of subsidiaries techniques. With rare exceptions the production per hectare has grown enormously in the past twenty years on the planet.

Thus, countries such as Korea, Cameroon; Mali and Egypt, according to reliable data from FAO, possessing large amount of little fertile land, have achieved significant rates of increase in cereal production. It is estimated that the use of high technology in third world countries would allow an increase of crops which, in general terms, can reach a fifty percent on the previous productions. However, should add another important factor, as it is the conservation of foods, and which have a not-too-distant case, as in Russia, where a high percentage of cereal production was lost for lack of a good network of storage silos. All this needs to push Governments to introduce cultivation techniques appropriate, create specialized infrastructure and invest in research and technology. Only effective policies United to the latest technologies and a good network marketing can be released to the land of one of the worst scourges: hunger. And is that, as the poet said: hunger is the first knowledge: / hungry is the first thing you learn. Francisco Arias Solis Si you want peace, work for justice. For peace and freedom and Forum free Internet portal.

Slag and Cement

Posted by Juan on June 20, 2014 with Comments Closedas

Typically, individual surface finely slag is 2500 – 3500 cm / city Fine ground slag, added to the cement, significantly affect the structure formation of cement stone. Microsilica is a waste product of silicon alloys of ferrosilicon, crystalline silicon, etc. In the process of melting the charge and recovery of quartz at temperatures above 1800oS gaseous silicon is formed, which when cooled and exposed to air oxidizes to SiO2 and condenses in the form of ultrafine particles of silica. SiO2 content in the silica fume is 85-98%. From other active mineral additives microsilica has a very small size particles (0.1-0.5 microns) and high specific surface (18-25 m / g). Located in the concrete in the pores of cement, microsilica improves the density and thus strength, impermeability and durability of concrete.

To seal the concrete require fewer mineral supplements (mixture porosity 'cement – aggregate' is relatively small) than when diluted in a wide range of cement, so the usual flow of microsilica in concrete is 5-15% of weight of cement, which is lower than other mineral supplements. In addition, in this case the interaction in concrete, Ca (OH) 2 and SiO2 is relatively limited, and it persists for a long time needed to per boards reinforcement alkaline corrosion. In the dry form because of the dispersion of ultra-high bulk density silica fume is only 0.15-0.2 t / m , making it difficult to transport. In the production of concrete is usually used pre- granular or briquetted microsilica, which greatly facilitates its transport and use. Organo-mineral supplements are combining into a single system of organic and mineral components having a specific modifying effect. Studies have shown that fine mineral supplements improve the efficiency of the plasticizers and, conversely, the latter contribute to positive action E mineral fillers on the structure of the concrete mix and concrete. NIIZhB suggested that organo-mineral complex modifier of the structure and properties of concrete MB-01 polyfunctional including superplasticizer C-3 (6-12% of weight) and microsilica and represents a powdered product bulk density of 750-800 kg / m with grain size up to 100 microns.

As a regulator of hardening (PT), injected into it organophosphorus complex. In applying this additive increases the keeping consistency of concrete mix, it is possible to obtain concrete with a strength above 100 MPa, low permeability and high durability. On the same principle established organo-mineral MB-C modifier. It includes a superplasticizer C-3, microsilica and fly ash-ash, in which 30-50% of silica fume replaced with a more affordable ash, ash, without noticeable loss performance additives. In general, organo-mineral Supplements are available in powder-shaped form, which facilitates their introduction into the concrete mix during its preparation. When designing the application in concrete additives necessary to carry out technical and economic calculations for predict the expected effect. It should be borne in mind that the use of additives in concrete technology, requires additional costs for a warehouse addition, highways, site preparation additives to additional congestion on the concrete mixing shops and factories. Some additives are relatively expensive and more scarce. It is therefore necessary to use additives in the first place where they use gives the greatest technical and economic effect. C the current situation and outlook for the Russian market additives for concrete, cement, CAS can be found in the records of the Academy of IKAR industrial markets "The market for supplements concrete, cement and dry mortar in Russia. "

Press Ctrl

Posted by Juan on June 17, 2014 with Comments Closedas

Each inode is identified by an integer, unique within the system files and directories contained a list of pairs consisting of a number of inode and name identification that allows access to that file, every file has one inode, but may have more than one name in different or even in the same directory to facilitate location. “In our case, our file inode is 512 495, this is the ID of our file on the system. When you delete a file with the rm command, what we do is delete the reference to the inode in question, for a time that inode will continue to exist in our system but we can not see and it appears that the deleted file has disappeared from our system. If any program is accessing the file that we deleted, are lucky. The program in question will have a reference to the inode of the deleted file and provided they do not close this program we can retrieve the contents of this file.

(A practical case that many of us ever happened to the log file to delete any system service (apache, postgresql, mysql. etc) while the service is working) Here is a full session since we delete a file until you recover: We open our file example with less (for example) less fichero_pruebas.txt THIS IS A TEST FILE TEXT fichero_pruebas.txt (END) Press Ctrl + z to suspend the less program without stopping it (the program remain open, accessing our database, but suspended) less fichero_pruebas.txt 1 + Stopped less fichero_pruebas.txt We found that our file is intact: ls-li fichero_pruebas.txt 512 495-rw-r – r – 1 root root 39 02/04/2008 22:28 fichero_pruebas.txt We erase … 😉 accidentally rm test.txt ficheros_de We found that not exist in our directory ls ls-li fichero_pruebas.txt: fichero_pruebas.txt: No such file or directory As discussed above, if we have a program accessing the file we’re lucky. Use lsof to see if any program is accessing the file that we deleted: lsof grep user fichero_pruebas.txt less 4r REG 28 410 3.1 39 512 495 / home / user / fichero_pruebas.txt (deleted) should not be a surprise that our less this program accessing our file deletion. The columns we are interested in this line are the first (PID of the program accessing the file, 28 410), and the fourth, the ‘file descriptor’ (4r) with reference to our file inode (512 495). With this information we go to the virtual filesystem / proc information on our linux system.

ls-l / proc/28410/fd/4 lr-x —— 1 user user 64 02/04/2008 22:38 / proc/28410/fd/4 – / home / user / fichero_pruebas.txt ( deleted) As expected, a reference to the deleted file. All you have to do now is copy the data to which / proc/28410/fd/4 this reference. For this we can easily use cp cp / proc/28410/fd/4 fichero_pruebas.txt.restaurado Now no matter what our program has finished running less because our already deleted file recovered. cat fichero_pruebas.txt.restaurado THIS IS A TEST FILE TEXT This article must have a little luck to keep our database, but in future articles we will see other techniques to use when luck is not on our side. That’s it for today, enjoy it.

Pablo Freire

Posted by Juan on June 16, 2014 with Comments Closedas

Moreover, I recognize the imperious necessity of if reviewing the concepts that if have on the Mathematics, that is so important in the life of the man. As well as of the methods and techniques used in its education. Regarding this if it places Pablo Freire (1998, P. 26-29): I do not fear to say […]

Managing Barcode

Posted by Juan on June 15, 2014 with Comments Closedas ,

It's important to remember for yourself what the product code (part number, a unique identifier) and a barcode – a completely different concept, and, in general, no relation to each other have not. Understanding this difference is easy to explain why one item (item) can have several different bar codes – any additional information that […]


Posted by Juan on June 11, 2014 with Comments Closedas ,

Suitable to the situation the location of the sound processor on the head is balanced perfectly. An effective noise cancellation, an effective feedback management, as well as a reduction in wind noise allow listening and understanding even in the most challenging acoustic environment. The datalogging function ensures optimal success in the fine tuning. Innovative wireless […]