Compressed natural gas

Compressed natural gas (CNG) (methane stored at high pressure) can be used in place of gasoline (petrol), Diesel fuel and propane/LPG. CNG combustion produces fewer undesirable gases than the fuels mentioned above. It is safer than other fuels in the event of a spill, because natural gas is lighter than air and disperses quickly when released. CNG may be found above oil deposits, or may be collected from landfills or wastewater treatment plants where it is known as biogas.

CNG is made by compressing natural gas (which is mainly composed of methane, CH₄), to less than 1 percent of the volume it occupies at standard atmospheric pressure. It is stored and distributed in hard containers at a pressure of 20–25 MPa (2,900–3,600 psi), usually in cylindrical or spherical shapes.

CNG is used in traditional gasoline/internal combustion engine automobiles that have been modified or in vehicles which were manufactured for CNG use, either alone ('dedicated'), with a segregated gasoline system to extend range (dual fuel) or in conjunction with another fuel such as diesel (bi-fuel). Natural gas vehicles are increasingly used in Iran, especially Pakistan, the Asia-Pacific region, Indian capital of Delhi, and other large cities like Ahmedabad, Mumbai, Kolkata—as well as cities such as Lucknow, Kanpur, etc. Its use is also increasing in South America, Europe and North America because of rising gasoline prices. In response to high fuel prices and environmental concerns, CNG is starting to be used also in tuk-tuks and pickup trucks, transit and school buses, and trains.

Music video

A music video or song video is a short film integrating a song and imagery, produced for promotional or artistic purposes. Modern music videos are primarily made and used as a marketing device intended to promote the sale of music recordings. There are also cases where songs are used in tie in marketing campaigns that allow them to become more than just a song. Tie ins and merchandising could be used in toys are marketing campaigns for food and other products. Although the origins of music videos date back to musical short films that first appeared in the 1920s, they came into prominence in the 1980s when MTV based their format around the medium. Prior to the 1980s, these works were described by various terms including "illustrated song", "filmed insert", "promotional (promo) film", "promotional clip", "promotional video", "song video", "song clip" or "film clip". Since the creation and increased popularity of YouTube, mainstream artists now promote new music videos by releasing trailers of short promos on the site for their upcoming song and music video. Consequentially, YouTube has been converted into a social media platform for celebrities and artists to market themselves to their fans and audiences.

Punjabis

The Punjabis (Punjabi: پنجابی (Shahmukhi), ਪੰਜਾਬੀ (Gurmukhi); Hindi: पंजाबी (Devanagari)), also spelt Panjabis, are an ethnic group of Indo-Aryan peoples, originating from the Punjab region, found in Pakistan and northern India. Punjab literally means the land of five waters (Persian: panj ("five") āb ("waters"). The name of the region was introduced by the Turko-Persian conquerors of India and more formally popularized during the Mughal Empire. Punjab is often referred to as the breadbasket in both Pakistan and India.

The coalescence of the various tribes, castes and the inhabitants of the Punjab into a broader common "Punjabi" identity initiated from the onset of the 18th century CE. Prior to that the sense and perception of a common "Punjabi" ethno-cultural identity and community did not exist, even though the majority of the various communities of the Punjab had long shared linguistic, cultural and racial commonalities.

Traditionally, Punjabi identity is primarily linguistic, geographical and cultural. Its identity is independent of historical origin or religion, and refers to those who reside in the Punjab region, or associate with its population, and those who consider the Punjabi language their mother tongue.Integration and assimilation are important parts of Punjabi culture, since Punjabi identity is not based solely on tribal connections. More or less all Punjabis share the same cultural background.