Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

Input: Consider Input: Highlights of Human brain development from conception through adulthood. Studies report that three primary structures are formed in the sixth gestational week. These are the forebrain, the midbrain, and the hindbrain, also known as the prosencephalon, mesencephalon, and the rhombencephalon respectively. Five secondary structures from these in the seventh gestational week. Worse, teens' brains make them much more vulnerable to becoming addicted than a fully developed adult brain. The part of the teen brain not yet fully developed is the frontal lobe, which is the part of the brain that manages impulse control, judgment, insight, and emotional control. So when teens engage in risky and/or foolish behavior, it's not just that they don't have life experience to know better, but that their brains have difficulty assessing consequences. Brain diagram. Credit: dwp.gov.uk. (PhysOrg.com) -- New research from the UK shows the brain continues to develop after childhood and puberty, and is not fully developed until people are well into their 30s and 40s. The findings contradict current theories that the brain matures much earlier. When we think about brain development and plasticity, most of us think about the birth and death of neurons or changes in the number or strength of synapses. Yet, no part of the brain works in isolation. Brain maturation and plasticity also depends upon the large nerve fiber tracts that connect different brain regions together. The limitations of the teen brain has been well publicized in the mass media, helping parents, teachers, and others understand why it may be difficult for teens to meet our expectations and demands for managing emotions, handling risks, responding to relationships, and engaging in complex school work or employment. The results are consistent with other research suggesting that the human brain continues to grow and mature right up to the point when we become adults and even beyond. In another study, researchers found that humans don't really develop the ability to handle multiple pieces of information at once until about the ages of 16 or 17. In a recent paper in the Journal of Neuroscience (link is external), investigators described a study in which they monitored white matter changes in 103 healthy human subjects, ages 5 to 32 years. For each subject, they imaged the brain at least twice with an average period of four years between scans. Some tracts, such as sections of the corpus callosum, appeared to reach maturity during adolescence, but, in about 50 % of the older subjects, the association fiber tracts continued to mature. Brain changes significantly after age 18, says Dartmouth research. Dartmouth College Office of Public Affairs • Press Release. Posted 02/06/06 • Contact Susan Knapp (603) 646-3661. Two Dartmouth researchers are one step closer to defining exactly when human maturity sets in. In a study aimed at identifying how and when a person's brain reaches adulthood, the scientists have learned that, anatomically, significant changes in brain structure continue after age 18. A fetus is a stage in the prenatal development of viviparous organisms. In human development, a fetus or foetus (/ˈfiːtəs/; plural fetuses or foetuses) is a prenatal human between the embryonic state and birth. The fetal stage of development tends to be taken as beginning at the gestational age of eleven weeks, i.e. nine weeks after fertilization. A control group of 17 older students, ranging in age from 25 to 35, were also studied for comparison. The results indicate that significant changes took place in the brains of these individuals. The changes were localized to regions of the brain known to integrate emotion and cognition. Query: at what age is the human brain fully formed

Output: Brain is not fully developed until people are well into their 30s and 40s.


Input: Consider Input: Cell machines have large tool magazines to carry enough tools to do all of the various operations on each of the different parts, large worktables or the ability to change worktables, and special provisions in the controller for data inputs from other CNC machines. Attached to the side of the machine is a magazine of different tools. A transfer arm, sometimes called the tool bar, removes a tool from the machine, places it into the magazine, selects a different tool from the magazine, and returns it to the machine through instructions in the program. The fourth category covers modern machine tools and processes for machining ultrahard metals not machinable by older methods. 1  Machine tools that form parts by removing metal chips from a workpiece include lathes, shapers and planers, drilling machines, milling machines, grinders, and power saws. Modern machine tools cut or form parts to tolerances of plus or minus one ten-thousandth of an inch (0.0025 millimetre). In special applications, precision lapping machines can produce parts that are within plus or minus two millionths of an inch (0.00005 millimetre). The motions that are used in machine tools are called axis, and are referred to as X (usually left to right), Y (usually front to back), and Z (up and down). The work-table may also be rotated in the horizontal or vertical plane, creating a fourth axis of motion. After the advent of the steam engine, material goods were produced by power-driven machines that could only be manufactured by machine tools. Machine tools (capable of producing dimensionally accurate parts in large quantities) and jigs and fixtures (for holding the work and guiding the tool) were the indispensable innovations that made mass production and interchangeable parts realities in the 19th century. Machine tool: Machine tool, any stationary power-driven machine that is used to shape or form parts made of metal or other materials. The shaping is accomplished in four general ways: (1) by cutting excess material in the form of chips from the part; (2) by shearing the material; (3) by squeezing metallic parts to the desired shape; and (4) by applying electricity, ultrasound, or corrosive chemicals to the material. Welding the base. 1  1 The base of the machine is either cast or welded together. It is then heat treated to remove casting or welding stresses and to normalize the metal for machining. 2  2 The ways are ground flat, bolted, and pinned to the base. The controller. 1  5 The computer, or controller, is an electronic assembly separate from the rest of the machine. It has a climate-controlled enclosure mounted on the side of the frame or in an operator's console. 2  6 The assembled machine is test run for accuracy. In particular, machine-driven tools became necessary to manufacture the parts for the machines that now made goods formerly produced by hand. Most common machine tools were designed by the middle of the 19th century. Query: how is made machine tools

Output: Machine tools that form parts by removing metal chips from a workpiece include lathes, shapers and planers, drilling machines, milling machines, grinders, and power saws.


Input: Consider Input: Related: 5 Tasty Ways to Eat More Yogurt. The problem is that beneficial bacteria may not be the only microscopic organisms in your yogurt. Plenty of other germs can flourish in milk and prove harmful if they slip into the fermentation process and then replicate in the carton in the back of your fridge. supposedly one week. The expiration date is supposed to be the last day you can purchase it.. not when it is no longer good. You probably shouldn't eat yogurt very far past the expiration date. You can maybe go a couple of days. Otherwise, look at it like this. eggs will last three to four weeks past their sell-by date? You have to refrigerate them to rule out any safety concerns. Be sure to store them in their original container on a refrigerator shelf, rather than on the door, where the eggs will be more vulnerable to fluctuations in temperature because it's constantly opened and closed. Yogurt can be safely eaten up to 10 days after its sell-by date; beyond then the live bacterial cultures (which are healthful ingredients, and act as preservatives) will start to die. Mayonnaise is still good for a month after its expiration date (unopened) and up to four months after opening. Eggs, properly refrigerated, should last at least three to five weeks after the sell-by date. Canned goods are good to eat long after labeling dates, as long as the can is in good shape. If a can is dented, rusted, or swollen, toss it out. The short answer is that refrigerated yogurt is safe to eat up to 14 days after the expiration date, according to the FDA and the food processing giant General Mills. (Expiration dates indicate the point at which a food may start to lose quality — they have nothing to do with when the food will “go bad.”) But it’s important to eyeball your expired yogurt and do a sniff test before digging in. [3] I realize that Amiel is joking around but months past exp. date seems excessive and yogurt probably would be spoiled or moldy at that point . Most sources say 3-10 days past expiration seems to be the limit. USDA food safety specialist says they recommend eating yogurt within 1-2 weeks of purchase. [4] FYI: Per USDA food safety expert, it is safe to cut off mold and healthy margin from cheese, but they say you should not consume bread with mold on it. Answer: Most likely it is. Yogurt that has been properly stored will generally remain safe for at least 1 to 2 weeks after the sell-by date on the package. As the food safety specialists at Clemson University’s Cooperative Extension point out, this assumes that the temperature of your refrigerator remains at or below 40° Fahrenheit at all times. Pull dates are established so stores can keep only fresh products on their shelves, but that only means it should be sold or pulled from store shelves by that date. Most foods are good for at least a week or three beyond the pull date. Yogurt keeps indefinitely, or until colorful little patches of color and fuzz begin to grown in it. If mold appears on yogurt, or if it develops an off odor, flavor or appearance, you should always discard it immediately. (Note: This refers to “sell-by” terminology used in the United States; practices in other countries may differ.) See Also: Are Eggs Still Safe After the Expiration Date? Can You Safely Drink Milk After the Sell-By Date? If a calendar date is shown, immediately adjacent to the date must be a phrase explaining the meaning of that date such as sell-by or use before. Even if the date expires during home storage, a product should be safe, wholesome and of good quality if handled properly and kept at 40 °F or below. Query: how far past expiration date is yogurt safe


Output: Refrigerated yogurt is safe to eat up to 14 days after the expiration date.


