Mac: deletes the message “X is an application that is downloaded from the Internet. Are you sure you want to open this item?

June 15th, 2011 | knowledge & news | Comments Off

Mac: deletes the message “X is an application that is downloaded from the Internet. Are you sure you want to open this item?

Who has not personally suffered these toxic security advisories that watery Leopard every time we intend to open a newly downloaded application? I think everyone … If you like testing applications, surely one of the things you want most in the world is rid of these ads more typical of the culture that apple microsoftiana Cupertino. Eliminate the bad habit of Leopard which, admittedly, more than guard against a possible trojan underground, we completely out of proportion.

After exploring a bit, looking for foolproof method that would allow us to avoid these warnings, I’ve been a big disappointment. There is no simple, plain, simple. So, forget the Preferences panel and user account management, is taking the wrong end of the leaves. However, there is a method that proposes a young web developer named Henrik, and operates from Stockholm with his MacBook Air. The method consists of a small script that we have to download and assign the folder you downloaded applications.

Let’s start …

The script is called “quarantine”, a fitting name for the task at hand. Once you’ve downloaded, and fry it for later reservations. Just kidding. But “book it”because now we will create a folder in which then will transfer. Well. Go to the following path: ~ / Library / Scripts / “. And if not, create the folder “Folder Action Scripts”. You know how to create a folder: Right click and use option “New Folder” menu or the style guru of the Terminal by typing “mkdir-p ~ / Library / Scripts / Folder Action Scripts”. If you are done, you should stay as shown in the screenshot.

Now for our script saved and copied to the folder you just created, or rather, I dragged and dropped. Well. We are almost finished, this method has only two steps. Second step: Right click or CTRL + click on the folder where you saved the files and applications you usually download from Safari, Firefox, etc. From the context menu, go down until it is run into the option “More”, then “Configure Folder Actions”. Again, follow to the letter my instructions, here’s the next shot as a visual aid.

Well, now you’re facing a window called “Settings Folder Actions”. First things first: check the “Enable Folder Actions. ” Then, you face a double panel, one for folders and another for the scripts. Under the first column on the left, click the “+” and select the folder where you saved the downloaded applications. Once done, the system offers you select the script you want to attach. It is time critical. If you’ve done what I mentioned above, see the file name “Unquarantine.scpt” in the listing. Select it and click “Add”. That’s it!

Close the window “Folder Actions Setup”and tries to download an application to check it … Wait, I look at my virtual basket the latest gem I’ve found this week: iTubeX, an application that lets you download videos from sites such YouTube, Veoh or MetaCafe (among others), and convert to multiple formats, from DivX to MP4 FLV through.

Did you run? Bieeeeen … This solution is a bit convoluted to go through a third party script, but the important thing is that it works. It only remains to hope that in the future Apple will integrate a simple way to disable these ads heavy. For now, we hope that this solution continues to operate with future updates to our favorite feline: Mac OS X.

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Dell Tablet with keyboard duo allegedly starts next week

June 7th, 2011 | knowledge & news | Comments Off

Dell Tablet with keyboard duo allegedly starts next week

Dell’s hybrid netbook-tablet called “Inspiron Duo” is expected on 23 November which at least next week. Orders on the website will then be possible. The claim more familiar with the plans of the company sources .

The notes are not entirely surprising, recently has been a promotional video for the Intel Developer Forum in September presented device appeared. This week it is to the sources, information for Pre give. They are allegedly related to the idea of Microsoft’s new store in Bellevue in Washington state announced in.

With the Duo Dell shows a new concept-7-netbook and Windows 7 Tablet to switch between windows. Unlike the traditional, fairly expensive ” Convertible Tablet PC “is not a pivot, and its frame at the same time to pan and rotate the display. Instead, the screen frame is fixed, only the actual display is rotated. There are two points on the frame is hung on.

The Tablet is built so narrow that the keyboard can not be located within the same suspect. At the presentation at the IDF caused by the unusual conversion Netbook Tablet surprise for many attendees.


Dell Inspiron Duo.

Of the technical data is not known, but the hybrid model is dual-core atom one. The screen measures 10 inches diagonally. At the IDF Proptotyp ran Windows 7 Home Premium .

Dell believes that tablets increase not just the productivity of its users. So at least a passing shot of marketing manager Dave Zavelson was on Apple’s iPad during demonstrations at IDF. The Inspiron keyboard duo with the company sees as an answer to this problem.

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Small battery inside the “big treasure trove”

May 16th, 2011 | battery show | Comments Off

Small battery inside the “big treasure trove”

If improperly discarded used batteries mobile phones, directly into the soil and water pollution, a mobile phone battery in 60 tons of water may be polluted, that number shocking. See this information, how would you deal with the hands of the used cell phone batteries it?

In fact, old mobile phones and batteries contains valuable resources, recycling and reuse can bring significant economic value. In order to promote recycling of used mobile phones and batteries re-use, from the telecommunications operators to handset manufacturers and then to professional mobile phone, battery dismantling business, the entire mobile phone industry chain in action.

At present, the domestic carriers, represented by China Mobile has launched the “green box” of environmental programs in the country running the business hall of about 1,000, and handset manufacturers Motorola, Nokia, the 150 sales centers and long-term maintenance center set up a “green box” for collecting discarded cell phones and accessories. China Mobile in 2008 through the “green box” recycling of used environmental projects totaling 1.35 million mobile phones and accessories, 90% of mobile phone batteries.

Battery recyclers —

Cell phone batteries used in the cobalt and nickel

Professional battery recycling business Grammy successfully resolved a small used batteries of high-tech, economic of recovery.

“Is a treasure trove of used batteries, which contain large quantities of rare metals, rare metals extracted from the ore can replace even a resource of similar products.” Shenzhen Grammy’s technical standards and property manager SOURCES said so.

Metals in the cobalt, nickel, is also an important raw material production of high-performance batteries. Used batteries is rich in cobalt, nickel, but its refining technology is extremely complex, previously only a handful of countries such as Canada, to master. In 2003, Grammy and Tokyo University, China Central South University, captured in the refining of used batteries from cobalt, nickel, technical difficulties, and has become the only master of the sophisticated technology of the enterprise, successful resolution of a small used batteries high technology, the economy of recycling.

Currently, the Grammy is circular economy pilot units, but also the only country to waste batteries and battery recycling of waste as raw materials cobalt and nickel ultrafine powder scale enterprises. Recycling of used batteries Grammy categories are: a battery, zinc-manganese batteries mainly; secondary batteries, mainly nickel-cadmium batteries, nickel metal hydride batteries, lithium ion batteries. As the launching of the separate collection of used batteries unit Grammy in Shenzhen, Wuhan, Guangzhou, Zhongshan and other cities started in 12 categories of waste batteries recycling activities, the cumulative installation of 15,000 bins, collected nearly 3,000 tons of used batteries.

Five years, Grammy has gone through the pilot plant, small-scale construction of the factory to the recycling industrial park, has built an area of 420 acres, garden waste resources on R & D and production center, and two used batteries and electronic waste recycling use of plants, Co and Ni in the amount of waste disposal of waste, used batteries, electronic waste and other waste volume of 30,000 tons, 2,000 tons of the formation of ultrafine cobalt and nickel powder, nickel alloys and other high-tech products, recycling capacity.

As of October 2008, dealing with cobalt-nickel Grammy total of 50,000 tons of waste, recycling 4,000 tons of heavy metals, saving more than 300 million tons of raw ore to reduce the more than 21 cubic meters of water and 29 square kilometers of soil pollution, carbon dioxide emissions of more than 3100 tons, saving 72,000 tons of standard coal.

Mobile phone manufacturers —

A pre-paid mailing envelope

For used mobile phone batteries, Nokia introduced a measure: allowing consumers to return old mobile phone batteries for recycling. Companies to consumers an already pre-paid mailing envelopes, so that consumers return used batteries to completely free.

To recover the cell phone battery is represented in Nokia’s environmental philosophy, the product life cycle of the last major work is the product for proper waste disposal and recycling, the energy and materials to go back to the material cycle, to ensure that their impact on the environment Jian to a minimum.

In China, Nokia launched a mobile phone and accessories effective waste recycling activities. June 2002, Nokia mobile phones in China, opened the first “Green Recycling Campaign,” the prelude to more than 100 cities in the country authorized Nokia service center set up more than 200 recycling bins, recycling discarded consumer handsets and accessories. October 2003, Nokia and other phone companies jointly issued a “green initiatives mobile phone”, called for mobile phone manufacturers have voluntarily abandoned to assume responsibility for recycling mobile phones and accessories. December 2005, Nokia and China Mobile, Motorola co-sponsored “Green box environmental programs — recycle discarded cell phones and accessories joint action.” Sponsored the event in the country three more than 40 large and medium cities in the recovery of waste mobile phones and accessories action, covering nearly one thousand channel recovery of China Mobile’s business offices, hundreds of Nokia and Motorola’s sales center and maintenance center.

November 8, 2007, Nokia handsets and accessories waste recycling extends to the whole mobile phone industry chain, and the satellite network supplier Nokia Industrial Park, with the carry out the “Green box environmental programs satellite network.” According to satellite network, general manager of Jing Peng Industrial Park, introduced the Green box environmental programs the satellite network has been in 8 November 2007 in the satellite network from all the companies in the industrial park at the same time, each member of the Industrial Park will be satellite network Set recycling bins, promotional exhibition stands, by mail, posters, etc. to communicate with the entire staff has been in the satellite network of more than 50,000 employees in the industrial park has aroused great repercussion.

Currently, Nokia’s mobile phone manufacturing, 65% -80% of recyclable materials. Possible to ensure that the green phone, Nokia and work to extend the concept of environmental protection to the supplier network. Nokia (China) Investment Co., Ltd. introduced Xiaojie Yun, vice president, Nokia has a “Nokia supplier requirements” applicable to all direct and indirect suppliers. These requirements include environmental and business ethics requirements. Communication with suppliers on their training, and vendor contract review process, to Nokia’s network management vendors continue to maintain high environmental and social standards.

Communications operators —

Please put batteries into the “green box”

A country with 480 million users of telecom operators, ranging from 4 years ago started to recycle discarded mobile phone accessories as a corporate social responsibility, initiate recall in the country and has attracted a growing number of mobile phone production enterprises to participate, has total waste recycled more than 4 million mobile phone accessories, this is the China Mobile Communications Corporation for several years persistent implementation of the “Green box environmental programs.”

Once a user to transact business in told reporters: “cell phone for several department, threw a dozen pieces of batteries, either accidentally discovered the collection points, I will throw away the battery as before. “This recovery point is China Mobile’s” Green Box. ”

With mobile phone penetration rate of growth and the acceleration of cell phone replacement, in order to address the growing number of discarded cell phones and accessories, waste of resources and the enormous threat to the environment, in December 2005, China Mobile United Motorola, Nokia together to plan launched the “green box environmental programs —- waste recycling mobile phones and accessories joint action.”

In 2006, the “Green box environmental programs,” the participants from the initial three communication enterprise development to China Mobile, Motorola, Nokia, Bird, LG mobile phones, Lenovo Mobile, NEC Mobile, Panasonic, Amoi total of 9 companies, when by the end of a total of over 90,000 pieces of recyclable waste. To meet the May 17, 2007 World Telecommunication and Information Society Day, the majority of China Mobile to launch mobile phone consumers in the country to actively participate in the “Green Box Environmental Protection Scheme” to support environmental protection, support of green Olympic Games, China Mobile to “hand in hand you and me, so hope from generation to generation “as the organizing theme of” Green box environmental programs -517 special operations “, branch in the Business Chamber launched a variety of incentives to encourage users to actively participate in environmental action, the country moves more than 60% of the county’s own business Office were involved in this action. China Mobile and its related communication in the energetic efforts of enterprises, as at the end of December 2007, a total of recycling discarded cell phones and more than 260 million pieces of accessories.

In line with the 2008 Beijing Olympic Games, China Mobile also launched the Olympic Games special event, requiring the year to ensure the realization of “green box” covers 80% of the self-employed business offices, at the same time to “green box” sent to key government departments, to enhance the environmental awareness of people to provide more convenience and service. Company under the China Mobile Beijing during the Olympic Games features a significant increase in international customers, special green produced a multilingual posters; China Mobile Henan, where companies with a number of “resource-saving and environment-friendly” city-building needs, so that “green box” government departments and corporate clients into the unit, and let staff for recovery; Hubei carry out “I’m for the green box ‘to say a word’” campaign, launched by the salesperson to the user such as the green box recycling initiatives; Jilin, China Mobile, the company produced a special collapsible bags for environmental Shoulin this event; China Mobile Jiangxi, Xinjiang, the company also presented new business experience to the customer card or a small prepaid card; China Mobile Guizhou companies involved in environmental planning special events Olympic Games presented the key to customer deduction.

China Mobile and related communications in the energetic efforts of enterprises, “green box green” joint action to establish an open platform for waste recycling mobile phones and accessories, through this platform will allow more enterprises to participate in the communication to the communication of environmental protection cause. At the end of the interview, China Mobile made a responsible person in particular, hopes to “Economic Times” to remind consumers: If you have a used cell phone batteries, do not forget to throw the “green box.”

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Acer takes 15.6-inch notebook with Nvidia’s 3D vision technology

May 10th, 2011 | knowledge & news | Comments Off

Acer takes 15.6-inch notebook with Nvidia’s 3D vision technology


Acer Aspire 5745DG.

Acer has the Aspire 5745DG for October, a 15.6-inch notebook announced that Nvidia supports 3D-vision technology. Using an active shutter glasses and the built-in 120-Hz display can play out to film scenes in stereoscopic 3D are considered.

Nvidia DirectX 11 graphics chip Geforce GT 425M provides 1 GB of dedicated memory to the display, superimposed images added for the left and right eye. The 3D glasses synchronized with the contents displayed by opening and closing the left or right lens. The actual 3D image rate is therefore 60 frames per second.

The 16:9 screen with LED backlight replaced on 1366 by 768 pixels. The Aspire is powered by a 5745DG IntelIX-core processor, the available depending on the configuration, up to 8 or 16 GB of DDR3 RAM support.

For mass storage, Acer installed a 750 GB hard drive with 5400 rpm. The optical drive users have the choice between a dual-layer DVD burner with and without write capabilities of Blu-rays.

Other amenities include Wi-Fi (802.11b/g/n), Gigabit Ethernet, Bluetooth 3.0, an HD Webcam (1280 x 1024 pixels), a 5-in-1 card reader and Windows 7 Home Premium 64 bit. Connections to four USB 2.0 ports, audio ports as well as one VGA and HDMI output are available.

The Aspire 5745DG measures 37.9 by 25 times from 3.2 to 5.8 inches and weighs around 3 kilograms. The basic model costs 999. Acer gives a two year warranty.

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5kW fuel cell catalysts and high temperature and pressure-free humidifier stack

May 4th, 2011 | battery show | Comments Off

5kW fuel cell catalysts and high temperature and pressure-free humidifier stack

Normal temperature and pressure-free proton exchange membrane fuel cell humidifier is current domestic and international fuel cell of the important issues. Pressure can be low-power fan is running to replace high energy consumption of air compressor; room temperature fuel cell operation can quickly start under normal conditions without pre-heat, replacing the heating system, so that the output efficiency is increased by 8% to 10% and cost savings of 15%.

Normal temperature and pressure at home and abroad, and pressure-free humidification fuel cell fuel cell stack has a lot of respect. This development of low-temperature activity of Pt / C catalyst, coating technology and a direct free humidification technology, design and equipped with 5 kW normal temperature and pressure-free fuel cell stack humidification.

1 experiment

Catalyst 1.1

Organic sol method. Pt / C catalyst, the bulk production of 10 g, containing platinum 20%. XRD detection of active component granularity; electrochemical method to test activity of surface area, measured by cyclic voltammetry of methanol oxidation catalyst for electro-catalytic activity.

1.2 electrode

In the infrared light irradiation, with the coated film is dried directly prepare membrane electrode. This can effectively prevent the membrane swelling, so tightly with the membrane catalyst and catalyst for the formation of three-dimensional porous coating. Electrode performance of fuel cells by the ARBIN test system testing.

1.3-free humidification technology stack design

Add appropriate amount of moisture in the catalyst layer agent, and designed humidification-free operating mode.

To make bipolar plates made of graphite sheet, mechanical milling flow field, the interval boards set by the cooling plate model; rubber seal, with the assembled stack of digital presses.

1.4 Operation stack

Use PALTONG 10kW fuel cell stack test pilot systematic observation. Conditions are as follows: air and hydrogen are not wet, not warm, the air flow rate at full power 350 ~ 400 L / min, air flow from the stack directly after emptying, hydrogen flow rate 60 ~ 70 L / min, intermittent emissions, emissions per run 10 s 1 s; air and hydrogen input pressure was 10kPa and 5 kPa; gases pass into the 3 ~ 5 s after the stack to full power operation.

2 Results and discussion

2.1 Pt / C catalyst properties

The Pt / C catalysts by XRD tests show that (not shown), the main diffraction peak was broadened, highly dispersed active component, estimated by the formula SCHERRER particles of about 2. 8 nm.

Figure 1 organic sol prepared 20% (bymass) Pt / C catalyst in the TEM photographs

Fig. 1 The TEM images of the 20% (bymass) Pt / C catalystprepared by organic colloidalmethed

It was found that the catalyst was activated, the adsorption to remove impurities, no significant changes in its crystalline form, but the particle size increased to 3. 0 nm. Figure 1 shows the 10 g mass production of the Pt / C catalyst in the TEM photographs.

2.2 Pt / C electro-catalytic activity of catalyst

Figure 2 shows the 10 g mass production of the Pt / C catalyst electrode in methanol solution in the CV curve. Figure shows: the catalyst (curve b) for methanol electro-oxidation has a good catalytic activity, its catalytic performance is far higher than the commodity Pt catalyst (curve a, c).

2.3 Free-humidifying membrane electrode structure and performance evaluation of Figure 3a shows the membrane was prepared by the CCM electrode polarization curves. And traditional film electrode coated carbon paper method (Fig. 3b) compared to show better performance.

The battery temperature is 75 鈩?and 70 鈩?for humidification conditions, this self-made membrane electrode has reached almost the same level of membrane electrode (see Figure 4).

CLC number: TG174. 418 Document code: A

Normal temperature and pressure-free proton exchange membrane fuel cell humidifier is current domestic and international fuel cell of the important issues. Pressure can be low-power fan is running to replace high energy consumption of air compressor; room temperature fuel cell operation can quickly start under normal conditions without pre-heat, replacing the heating system, so that the output efficiency is increased by 8% to 10% and cost savings of 15%.

Normal temperature and pressure at home and abroad, and pressure-free humidification fuel cell fuel cell stack has a lot of respect. This development of low-temperature activity of Pt / C catalyst, coating technology and a direct free humidification technology, design and equipped with 5 kW normal temperature and pressure-free fuel cell stack humidification.

1 experiment

Catalyst 1.1

Organic sol method. Pt / C catalyst, the bulk production of 10 g, containing platinum 20%. XRD detection of active component granularity; electrochemical method to test activity of surface area, measured by cyclic voltammetry of methanol oxidation catalyst for electro-catalytic activity.

1.2 electrode

In the infrared light irradiation, with the coated film is dried directly prepare membrane electrode. This can effectively prevent the membrane swelling, so tightly with the membrane catalyst and catalyst for the formation of three-dimensional porous coating. Electrode performance of fuel cells by the ARBIN test system testing.

1.3-free humidification technology stack design

Add appropriate amount of moisture in the catalyst layer agent, and designed humidification-free operating mode.

To make bipolar plates made of graphite sheet, mechanical milling flow field, the interval boards set by the cooling plate model; rubber seal, with the assembled stack of digital presses.

1.4 Operation stack

Use PALTONG 10kW fuel cell stack test pilot systematic observation. Conditions are as follows: air and hydrogen are not wet, not warm, the air flow rate at full power 350 ~ 400 L / min, air flow from the stack directly after emptying, hydrogen flow rate 60 ~ 70 L / min, intermittent emissions, emissions per run 10 s 1 s; air and hydrogen input pressure was 10kPa and 5 kPa; gases pass into the 3 ~ 5 s after the stack to full power operation.

2 Results and discussion

2.1 Pt / C catalyst properties

The Pt / C catalysts by XRD tests show that (not shown), the main diffraction peak was broadened, highly dispersed active component, estimated by the formula SCHERRER particles of about 2. 8 nm.

Figure 1 organic sol prepared 20% (bymass) Pt / C catalyst in the TEM photographs

Fig. 1 The TEM images of the 20% (bymass) Pt / C catalystprepared by organic colloidalmethed

It was found that the catalyst was activated, the adsorption to remove impurities, no significant changes in its crystalline form, but the particle size increased to 3. 0 nm. Figure 1 shows the 10 g mass production of the Pt / C catalyst in the TEM photographs.

2.2 Pt / C electro-catalytic activity of catalyst

Figure 2 shows the 10 g mass production of the Pt / C catalyst electrode in methanol solution in the CV curve. Figure shows: the catalyst (curve b) for methanol electro-oxidation has a good catalytic activity, its catalytic performance is far higher than the commodity Pt catalyst (curve a, c).

2.3 Free-humidifying membrane electrode structure and performance evaluation of Figure 3a shows the membrane was prepared by the CCM electrode polarization curves. And traditional film electrode coated carbon paper method (Fig. 3b) compared to show better performance.

The battery temperature is 75 鈩?and 70 鈩?for humidification conditions, this self-made membrane electrode has reached almost the same level of membrane electrode (see Figure 4).

Need to point out that this self-made film electrode has good activity at low temperature, such as at room temperature is almost run its output power density of up to run with the level of 75 鈩?

Figure 5 shows the SEM photos directly to the electrode coating. It can be seen from the figure, fluffy porous catalyst layer thickness of 4. 6um, proton exchange membrane bound very closely.

2.4 5 kW fuel cell stack

Figure 6 shows the humidity-free 5 kW fuel cell stack of photographs. Figure 7 shows the temperature and pressure-free humidifier 5 kW stack operational characteristics. Electrode been pre-activation first, and then assembled into the stack. Stack operating conditions: the number of stack section 50; air flow 400 L / min, hydrogen flow rate 75 L / min, the direct discharge of air, hydrogen intermittent emissions. power reactor without preheating, air, hydrogen and without humidification. continuous operation of the stack 10 h, stable output power constant (see Figure 7).

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