I have a vacuum sealed 8 lb. beef tenderloin that was in my refrigerator.  The door was not closed completely and the refrigerator warmed to 42 degrees just at the beginning of the danger zone.  The refrigerator could have been at that temp for 6 to 8 hours.  The tenderloin was in the middle back of a bottom shelf.  Is this safe to use?
If I left food out of the refrigerator for some period of time, is it still safe? If I left it out too long, can I salvage it by cooking it more?
$$\displaystyle\int \:\sin^n\left(x\right)\cos^m\left(x\right)\mathrm  dx=\frac{\sin^{n+1}x\cos^{m-1}x}{m+n}+\frac{m-1}{m+n}\int \:\sin^nx\cos^{m-2}x\,\mathrm dx$$  I have been trying to solve for over a week now can someone please help me. Let $g_n= {2^2}^n +1 $. Prove $g_0 · g_1 · · · g_{n−1} = g_{n} − 2$.    I'm not sure how to start this proof, if it should be done algebraically or if I should try to use a proof by induction. How to compress entire drive C in Windows including locked files? So I've got a file with loads of simple objects. This will later be used to cut out these shapes out of plastic. So, using the material optimally is of outmost importance. I was wondering if there is any script or plugin that could automaticly arrange the objects within the artboard so they could fit best. How can I vertically align the numerators of two fractions? I am writing the following formula:  % arara: lualatex  \documentclass{article} \usepackage{mathtools} \usepackage{unicode-math}  \begin{document} \[y_\mathup{COG}=\frac{h}{3}\frac{l_\mathup{c,a}+2l_\mathup{c,i}}{l_\mathup{c,a}+l_\mathup{c,i}}\] \end{document}   which yields:    I don't like the way, the h and l_\mathup{index} is vertically aligned. Is that typical behavior? Good style? Could I avoid that? I've had a promising Skype interview with a great professor from a top-level university in US. Our research interests are closely related and he encouraged me to apply BUT he says that all decisions are finally made by admission committee there.  The question is "Is a professor in such a high-level university able to affect admission committee if he really wants a student?" or "Does admission committee decision-making process become easier if a professor really wants an applicant?"  The main point is the difference between my transcript (which is a real catastrophe!) and my research background which is pretty good so the professor's decision might be different from admission committee. "Not a COM32R image" error when trying to install from a USB key Not a COM32R image boot   is a message that the console infinitely keeps spitting out when I try to install Ubuntu 10.04 from a USB. I created the USB using the StartupDiskCreator in 11.04.  What is the reason for this behavior? What do I do to set it right?   I have followed the steps perfectly, as enlisted in the . Philosophy is the mother of all science Prologue Running google search:  at the time of this post yields about 114,000 results, and while this Quora post:  puts forth the question to determine the truth of the matter, it does not address the historical, etymological, and philosophical import of the matter. This PhilSE Post:  clearly addresses theory, but does not address the historical aspect. The related question in Researchgate post:  seems to not provide a substantial answer either. Inquiry What is the  context in which the statement 'Philosophy is the mother of all science' or related ones began to recognize as a  the  relationship between philosophy and the advent of modern science under thinkers like ? That is to say, what historical and social consequences were responsible for seeing  somehow superior as a theory to the ? Epilogue The question is intended to determine the metaphilosophical insights of philosophers. For example, if Karl Popper used the phrase or one similar, did he appeal to previous philosophers for insight on that same relationship? See Also Here is my attempt to prove the Well-Ordering Principle, i.e. that any non-empty subset of $\Bbb N$, the set of natural numbers, has a minimum element.  Proof. Suppose there exists a non-empty subset $S$ of $\Bbb N$ such that $S$ has NO minimum element. Define $A = \left\{n\in \Bbb N : (\forall s\in S)(n \leq s)\right\}$. It is obvious that $1\in A$. Suppose $n\in A$, then for each $s \in S$, there exists $q \in N$ such that $n + q = s$. Since $q \ge 1$, $n+1 \leq s$, for all $s\in S$. By Principle of mathematical induction, $A = \Bbb N$. Take any $s_0 ∈ S$, then $(\forall s\in S)(s_0 \leq s)$. (This contradicts that $S$ has no minimum element).  How do I prove the statement without invoking Mathematical Induction? Also, I read that the proof of Principle of Mathematical Induction makes use of Well-Ordering. Can it be proven independently of Well-Ordering too? Inconsistent line spacing Strange bar plot alignment in Pandas How to revert to GNOME Classic Desktop? Capturing image from webcam in java? How can I continuously capture images from a webcam?  I want to experiment with object recognition (by maybe using java media framework).   I was thinking of creating two threads  one thread:   Node 1: capture live image Node 2: save image as "1.jpg" Node 3: wait 5 seconds Node 4: repeat...   other thread:   Node 1: wait until image is captured Node 2: using the "1.jpg" get colors from every pixle Node 3: save data in arrays Node 4: repeat... Show that $ a，b, \sqrt{a}+ \sqrt{b} \in\mathbb Q \implies \sqrt{a},\sqrt{b} \in\mathbb Q $ Inspired by , I was wondering if there is a simple logical argument to   Show that $ a,b, \sqrt{a}+ \sqrt{b} \in\mathbb Q  \implies  \sqrt{a},\sqrt{b} \in\mathbb Q $  Note that the original link is using a computational method, where as I am looking for a simple logical argument.  I tried (unjutifiably) to argue that if some of two square roots is rational then each one is rational, this is a different than the (incorrect) argument that if sum of two algebraic numbers is rational then each one is rational ( counter example $a=1-\sqrt{2},b= 1+\sqrt{2} $) I am a beginner to python coding in GIS. I want to calculate the total number of counts in raster attribute table. In order to do that:   I would like to build a attribute table of raster data use a loop through attribute table using ARCPY.SearchCursor()   Therefore, I wrote a code to build an attribute table. However, I am getting an error while running the code and not able to figure out the error in the code.  Code:  import arcpy # Create the geoprocessing object  import arcgisscripting gp = arcgisscripting.create()  #To overwrite output arcpy.env.overwriteOutput = True  #Set environment settings gp.workspace = "C:/Subhasis/Test/raster-read"  #Build Raster Attribute Table gp.BuildRasterAttributeTable_management("sti-9", "Overwrite")  Error Message: Traceback (most recent call last):   File "C:/Subhasis/Test/raster-read/test.py", line 15, in &lt;module&gt;     gp.BuildRasterAttributeTable_management("sti-9", "Overwrite") ExecuteError: ERROR 000049: Failed to build attribute table Failed to execute (BuildRasterAttributeTable). Cron fails with exit status 127 Select longest continuous sequence I am trying to construct a query in PostgreSQL 9.0 that gets the longest sequence of continuous rows for a specific column.  Consider the following table:  lap_id (serial), lap_no (int), car_type (enum), race_id (int FK)   Where lap_no is unique for each (race_id, car_type).  I would like the query to produce the longest sequence for a given race_id and car_type, so it would return an int (or long) that is highest.  With the following data:  1, 1, red, 1 2, 2, red, 1 3, 3, red, 1 4, 4, red, 1 5, 1, blue, 1 6, 5, red, 1 7, 2, blue, 1 8, 1, green, 1   For car_type = red and race_id = 1 the query would return 5 as the longest sequence of the lap_no field.  I found a similar question  however my situation is a bit more straightforward.  (I would also like to know the longest sequence for a given car_type for all races, but was planning to work that out myself.) The difficulty is that it should be cross platform. Windows 2000, XP, Vista, OSX, Linux, other unix variants. I am looking for a snippet of code that can accomplish this for all platforms, and a way to detect the platform.  Now, you should be aware of  that user.home does not work correctly, so please do not provide me of textbook answers, I can find these myself in the manuals. Consider the IVP $$y'(t)=f(y(t)), \ \ \ \ y(0)=a \in \mathbb{R}$$ $$f : \mathbb{R} \rightarrow \mathbb{R}$$ Which of the following is/are true $(A)$  There exists a continuous function $f : \mathbb{R} \rightarrow \mathbb{R}$ and $a \in \mathbb{R}$ such that the above problem does not have a solution in any nbd of $0$. $(B)$  The problem has unique solution for every $a \in \mathbb{R}$ when $f$ is Lipschitz continuous $(C)$ When $f$ is twice continuously differentiable the maximal interval of existence for the above IVP is $\mathbb{R}$ $(D)$ The maximum interval of existence  for the IVP is $\mathbb{R}$ when $f$ is bounded and continuously differentiable.  It is obvious to me that $A \ \&amp; \ B$ are false from traditional existance and uniqueness theorems (viz Picards Theorem). I am not sure about $C \ \&amp; \ D$ and this is really bugging me. Please could anyone shed light on this. PS: Multiple correct options are allowed. What should main() return in C and C++? What is the correct (most efficient) way to define the main() function in C and C++ — int main() or void main() — and why? And how about the arguments? If int main() then return 1 or return 0?  There are numerous duplicates of this question, including:       — For C++, with a very good answer indeed.     Related: